astroid’s ChangeLog

What’s New in astroid 2.4.0?

Release Date: TBA

  • All the numpy ufunc functions derived now from a common class that implements the specific reduce, accumulate, reduceat,

    outer and at methods.

    Close PyCQA/pylint#2885

  • The shape attribute of a numpy ndarray is now a ndarray

    Close PyCQA/pylint#3139

  • Don’t ignore special methods when inspecting gi classes

    Close #728

  • Added transform for scipy.gaussian

  • Add suport for inferring properties.

  • Added a brain for responses

  • Allow inferring positional only arguments.

  • Retry parsing a module that has invalid type comments

    It is possible for a module to use comments that might be interpreted as type comments by the ast library. We do not want to completely crash on those invalid type comments.

    Close #708

  • Scope the inference to the current bound node when inferring instances of classes

    When inferring instances of classes from arguments, such as self in a bound method, we could use as a hint the context’s boundnode, which indicates the instance from which the inference originated. As an example, a subclass that uses a parent’s method which returns self, will override the self to point to it instead of pointing to the parent class.

    Close PyCQA/pylint#3157

  • Add support for inferring exception instances in all contexts

    We were able to infer exception instances as ExceptionInstance only for a handful of cases, but not all. ExceptionInstance has support for better inference of .args and other exception related attributes that normal instances do not have. This additional support should remove certain false positives related to .args and other exception attributes in pylint.

    Close PyCQA/pylint#2333

  • Add more supported parameters to subprocess.check_output

    Close #722

  • Infer args unpacking of self

    Certain stdlib modules use *args to encapsulate the self parameter, which results in uninferable instances given we rely on the presence of the self argument to figure out the instance where we should be setting attributes.

    Close PyCQA/pylint#3216

  • Clean up setup.py

    Make pytest-runner a requirement only if running tests, similar to what was done with McCabe.

    Clean up the setup.py file, resolving a handful of minor warnings with it.

  • Handle StopIteration error in infer_int.

    Close PyCQA/pylint#3274

What’s New in astroid 2.3.2?

Release Date: TBA

  • All type comments have as parent the corresponding astroid node

    Until now they had as parent the builtin ast node which meant we were operating with primitive objects instead of our own.

    Close PyCQA/pylint#3174

  • Pass an inference context to metaclass() when inferring an object type

    This should prevent a bunch of recursion errors happening in pylint. Also refactor the inference of IfExp nodes to use separate contexts for each potential branch.

    Close PyCQA/pylint#3152 Close PyCQA/pylint#3159

What’s New in astroid 2.3.1?

Release Date: 2019-09-30

  • A transform for the builtin dataclasses module was added.

    This should address various dataclasses issues that were surfaced even more after the release of pylint 2.4.0. In the previous versions of astroid, annotated assign nodes were allowed to be retrieved via getattr() but that no longer happens with the latest astroid release, as those attribute are not actual attributes, but rather virtual ones, thus an operation such as getattr() does not make sense for them.

  • Update attr brain to partly understand annotated attributes

    Close #656

What’s New in astroid 2.3.0?

Release Date: 2019-09-24

  • Add a brain tip for subprocess.check_output

    Close #689

  • Remove NodeNG.nearest method because of lack of usage in astroid and pylint.

    Close #691

  • Allow importing wheel files. Close #541

  • Annotated AST follows PEP8 coding style when converted to string.

  • Fix a bug where defining a class using type() could cause a DuplicateBasesError.

    Close #644

  • Dropped support for Python 3.4.

  • Numpy brain support is improved.

    Numpy’s fundamental type numpy.ndarray has its own brain : brain_numpy_ndarray and each numpy module that necessitates brain action has now its own numpy brain :

    • numpy.core.numeric
    • numpy.core.function_base
    • numpy.core.multiarray
    • numpy.core.numeric
    • numpy.core.numerictypes
    • numpy.core.umath
    • numpy.random.mtrand

    Close PyCQA/pylint#2865 Close PyCQA/pylint#2747 Close PyCQA/pylint#2721 Close PyCQA/pylint#2326 Close PyCQA/pylint#2021

  • assert only functions are properly inferred as returning None

    Close #668

  • Add support for Python 3.8’s NamedExpr nodes, which is part of assignment expressions.

    Close #674

  • Added support for inferring IfExp nodes.

  • Instances of exceptions are inferred as such when inferring in non-exception context

    This allows special inference support for exception attributes such as .args.

    Close PyCQA/pylint#2333

  • Drop a superfluous and wrong callcontext when inferring the result of a context manager

    Close PyCQA/pylint#2859

  • igetattr raises InferenceError on re-inference of the same object

    This prevents StopIteration from leaking when we encounter the same object in the current context, which could result in various RuntimeErrors leaking in other parts of the inference. Until we get a global context per inference, the solution is sort of a hack, as with the suggested global context improvement, we could theoretically reuse the same inference object.

    Close #663

  • Variable annotations can no longer be retrieved with ClassDef.getattr

    Unless they have an attached value, class variable annotations can no longer be retrieved with ClassDef.getattr.

  • Improved builtin inference for tuple, set, frozenset, list and dict

    We were properly inferring these callables only if they had consts as values, but that is not the case most of the time. Instead we try to infer the values that their arguments can be and use them instead of assuming Const nodes all the time.

    Close PyCQA/pylint#2841

  • The last except handler wins when inferring variables bound in an except handler.

    Close PyCQA/pylint#2777

  • threading.Lock.locked() is properly recognized as a member of threading.Lock

    Close PyCQA/pylint#2791

  • Fix recursion error involving len and self referential attributes

    Close PyCQA/pylint#2736 Close PyCQA/pylint#2734 Close PyCQA/pylint#2740

  • Can access per argument type comments through new Arguments.type_comment_args attribute.

    Close #665

  • Fix being unable to access class attributes on a NamedTuple.

    Close PyCQA/pylint#1628

  • Fixed being unable to find distutils submodules by name when in a virtualenv.

    Close PyCQA/pylint#73

What’s New in astroid 2.2.0?

Release Date: 2019-02-27

  • Fix a bug concerning inference of calls to numpy function that should not return Tuple or List instances.
Close PyCQA/pylint#2436
  • Fix a bug where a method, which is a lambda built from a function, is not inferred as BoundMethod

    Close PyCQA/pylint#2594

  • typed_ast gets installed for Python 3.7, meaning type comments can now work on 3.7.

  • Fix a bug concerning inference of unary operators on numpy types.

    Close PyCQA/pylint#2436 (first part)

  • Fix a crash with typing.NamedTuple and empty fields. Close PyCQA/pylint#2745

  • Add a proper strerror inference to the OSError exceptions.

    Close PyCQA/pylint#2553

  • Support non-const nodes as values of Enum attributes.

    Close #612

  • Fix a crash in the enum brain tip caused by non-assign members in class definitions.

    Close PyCQA/pylint#2719

  • brain_numpy returns an undefined type for numpy methods to avoid assignment-from-no-return

    Close PyCQA/pylint#2694

  • Fix a bug where a call to a function that has been previously called via functools.partial was wrongly inferred

    Close PyCQA/pylint#2588

  • Fix a recursion error caused by inferring the slice builtin.

    Close PyCQA/pylint#2667

  • Remove the restriction that “old style classes” cannot have a MRO.

    This does not make sense any longer given that we run against Python 3 code. Close PyCQA/pylint#2701

  • Added more builtin exceptions attributes. Close #580

  • Add a registry for builtin exception models. Close PyCQA/pylint#1432

  • Add brain tips for http.client. Close PyCQA/pylint#2687

  • Prevent crashing when processing enums with mixed single and double quotes.

    Close PyCQA/pylint#2676

  • typing types have the __args__ property. Close PyCQA/pylint#2419

  • Fix a bug where an Attribute used as a base class was triggering a crash

    Close #626

  • Added special support for enum.IntFlag

    Close PyCQA/pylint#2534

  • Extend detection of data classes defined with attr

    Close #628

  • Fix typo in description for brain_attrs

What’s New in astroid 2.1.0?

Release Date: 2018-11-25

  • threading.Lock.acquire has the timeout parameter now.

    Close PyCQA/pylint#2457

  • Pass parameters by keyword name when inferring sequences.

    Close PyCQA/pylint#2526

  • Correct line numbering for f-strings for complex embedded expressions

    When a f-string contained a complex expression, such as an attribute access, we weren’t cloning all the subtree of the f-string expression for attaching the correct line number. This problem is coming from the builtin AST parser which gives for the f-string and for its underlying elements the line number 1, but this is causing all sorts of bugs and problems in pylint, which expects correct line numbering.

    Close PyCQA/pylint#2449

  • Add support for argparse.Namespace

    Close PyCQA/pylint#2413

  • async functions are now inferred as AsyncGenerator when inferring their call result.

  • Filter out Uninferable when inferring the call result result of a class with an uninferable __call__ method.

    Close PyCQA/pylint#2434

  • Make compatible with AST changes in Python 3.8.

  • Subscript inference (e.g. “a[i]”) now pays attention to multiple inferred values for value (e.g. “a”) and slice (e.g. “i”)

    Close #614

What’s New in astroid 2.0.4?

Release Date: 2018-08-10

  • Make sure that assign nodes can find yield statements in their values

    Close PyCQA/pylint#2400

What’s New in astroid 2.0.3?

Release Date: 2018-08-08

  • The environment markers for PyPy were invalid.

What’s New in astroid 2.0.2?

Release Date: 2018-08-01

  • Stop repeat inference attempt causing a RuntimeError in Python3.7

    Close PyCQA/pylint#2317

  • infer_call_result can raise InferenceError so make sure to handle that for the call sites where it is used

infer_call_result started recently to raise InferenceError for objects for which it could not find any returns. Previously it was silently raising a StopIteration, which was especially leaking when calling builtin methods. Since it is after all an inference method, it is expected that it could raise an InferenceError rather than returning nothing.

Close PyCQA/pylint#2350

What’s New in astroid 2.0.1?

Release Date: 2018-07-19

  • Released to clear an old wheel package on PyPI

What’s New in astroid 2.0?

Release Date: 2018-07-15

  • String representation of nodes takes in account precedence and associativity rules of operators.

  • Fix loading files with modutils.load_from_module when the path that contains it in sys.path is a symlink and the file is contained in a symlinked folder.

    Close #583

  • Reworking of the numpy brain dealing with numerictypes (use of inspect module to determine the class hierarchy of

    numpy.core.numerictypes module)

    Close PyCQA/pylint#2140

  • Added inference support for starred nodes in for loops

    Close #146

  • Support unpacking for dicts in assignments

    Close #268

  • Add support for inferring functools.partial

    Close #125

  • Inference support for dict.fromkeys

    Close #110

  • int() builtin is inferred as returning integers.

    Close #150

  • str() builtin is inferred as returning strings.

    Close #148

  • DescriptorBoundMethod has the correct number of arguments defined.

  • Improvement of the numpy numeric types definition.

    Close PyCQA/pylint#1971

  • Subclasses of property are now interpreted as properties

    Close PyCQA/pylint#1601

  • AsStringRegexpPredicate has been removed.

    Use transform predicates instead of it.

  • Switched to using typed_ast for getting access to type comments

    As a side effect of this change, some nodes gained a new type_annotation attribute, which, if the type comments were correctly parsed, should contain a node object with the corresponding objects from the type comment.

  • typing.X[…] and typing.NewType are inferred as classes instead of instances.

  • Module.__path__ is now a list

    It used to be a string containing the path, but it doesn’t reflect the situation on Python, where it is actually a list.

  • Fix a bug with namespace package’s __path__ attribute.

    Close #528

  • Added brain tips for random.sample

    Part of PyCQA/pylint#811

  • Add brain tip for issubclass builtin

    Close #101.

  • Fix submodule imports from six

    Close PyCQA/pylint#1640

  • Fix missing __module__ and __qualname__ from class definition locals

    Close PYCQA/pylint#1753

  • Fix a crash when __annotations__ access a parent’s __init__ that does not have arguments

    Close #473

  • Fix multiple objects sharing the same InferenceContext.path causing uninferable results

    Close #483

  • Fix improper modification of col_offset, lineno upon inference of builtin functions

    Close PyCQA/pylint#1839

  • Subprocess.Popen brain now knows of the args member

    Close PyCQA/pylint#1860

  • add move_to_end method to collections.OrderedDict brain

    Close PyCQA/pylint#1872

  • Include new hashlib classes added in python 3.6

  • Fix RecursionError for augmented assign

    Close #437, #447, #313, PyCQA/pylint#1642, PyCQA/pylint#1805, PyCQA/pylint#1854, PyCQA/pylint#1452

  • Add missing attrs special attribute

    Close PyCQA/pylint#1884

  • Inference now understands the ‘isinstance’ builtin

    Close #98

  • Stop duplicate nodes with the same key values from appearing in dictionaries from dictionary unpacking.

    Close PyCQA/pylint#1843

  • Fix contextlib.contextmanager inference for nested context managers

    Close #1699

  • Implement inference for len builtin

    Close #112

  • Add qname method to Super object preventing potential errors in upstream pylint

    Close #533

  • Stop astroid from getting stuck in an infinite loop if a function shares

its name with its decorator

Close #375
  • Fix issue with inherited __call__ improperly inferencing self

    Close #PyCQA/pylint#2199

  • Fix __call__ precedence for classes with custom metaclasses

    Close PyCQA/pylint#2159

  • Limit the maximum amount of interable result in an NodeNG.infer() call to

100 by default for performance issues with variables with large amounts of possible values.

The max inferable value can be tuned by setting the max_inferable_values flag on astroid.MANAGER.

What’s New in astroid 1.6.0?

Release Date: 2017-12-15

  • When verifying duplicates classes in MRO, ignore on-the-fly generated classes

    Close PyCQA/pylint#1706

  • Add brain tip for attrs library to prevent unsupported-assignment-operation false positives

    Close PYCQA/pylint#1698

  • file_stream was removed, since it was deprecated for three releases

    Instead one should use the .stream() method.

  • Vast improvements to numpy support

  • Add brain tips for curses

    Close PyCQA/pylint#1703

  • Add brain tips for UUID.int

    Close PyCQA/pylint#961

  • The result of using object.__new__ as class decorator is correctly inferred as instance

    Close #172

  • Enums created with functional syntax are now iterable

  • Enums created with functional syntax are now subscriptable

  • Don’t crash when getting the string representation of BadUnaryOperationMessage

    In some cases, when the operand does not have a .name attribute, getting the string representation of a BadUnaryOperationMessage leads to a crash.

    Close PyCQA/pylint#1563

  • Don’t raise DuplicateBaseError when classes at different locations are used

    For instance, one can implement a namedtuple base class, which gets reused on a class with the same name later on in the file. Until now, we considered these two classes as being the same, because they shared the name, but in fact they are different, being created at different locations and through different means.

    Close PyCQA/pylint#1458

  • The func form of namedtuples with keywords is now understood

    Close PyCQA/pylint#1530

  • Fix inference for nested calls

  • Dunder class at method level is now inferred as the class of the method

    Close PyCQA/pylint#1328

  • Stop most inference tip overwrites from happening by using

    predicates on existing inference_tip transforms.

    Close #472

  • Fix object.__new__(cls) calls in classmethods by using

    a context which has the proper boundnode for the given argument

    Close #404

  • Fix Pathlib type inference

    Close PyCQA/pylint#224 Close PyCQA/pylint#1660

What’s New in astroid 1.5.3?

Release Date: 2017-06-03

  • enum34 dependency is forced to be at least version 1.1.3. Fixes spurious

bug related to enum classes being falsy in boolean context, which caused _Inconsistent Hierarchy_ RuntimeError in singledispatch module.

See links below for details: - http://bugs.python.org/issue26748 - https://bitbucket.org/ambv/singledispatch/issues/8/inconsistent-hierarchy-with-enum - https://bitbucket.org/stoneleaf/enum34/commits/da50803651ab644e6fce66ebc85562f1117c344b

  • Do not raise an exception when uninferable value is unpacked in with statement.
  • Lock objects from threading module are now correctly recognised as context managers.

What’s New in astroid 1.5.2?

Release Date: 2017-04-17

  • Basic support for the class form of typing.NamedTuple
  • mro() can be computed for classes with old style classes in the hierarchy

What’s New in astroid 1.5.0?

Release Date: 2017-04-13

  • Arguments node gained a new attribute, kwonlyargs_annotations

    This new attribute holds the annotations for the keyword-only arguments.

  • namedtuple inference now understands rename keyword argument

  • Classes can now know their definition-time arguments.

    Classes can support keyword arguments, which are passed when a class is constructed using __new__.

  • Add support for inferring typing.NamedTuple.

  • ClassDef now supports __getitem__ inference through the metaclass.

  • getitem() method accepts nodes now, instead of Python objects.

  • Add support for explicit namespace packages, created with pkg_resources.

  • Add brain tips for _io.TextIOWrapper’s buffer and raw attributes.

  • Add returns into the proper order in FunctionDef._astroid_fields

    The order is important, since it determines the last child, which in turn determines the last line number of a scoped node.

  • Add brain tips for functools.lru_cache.

  • New function, astroid.extract_node, exported out from astroid.test_utils.

  • Stop saving assignment locals in ExceptHandlers, when the context is a store.

    This fixes a tripping case, where the RHS of a ExceptHandler can be redefined by the LHS, leading to a local save. For instance, except KeyError, exceptions.IndexError could result in a local save for IndexError as KeyError, resulting in potential unexpected inferences. Since we don’t lose a lot, this syntax gets prohibited.

  • Fix a crash which occurred when the class of a namedtuple could not be inferred.

  • Add support for implicit namespace packages (PEP 420)

    This change involves a couple of modifications. First, we’re relying on a spec finder protocol, inspired by importlib’s ModuleSpec, for finding where a file or package is, using importlib’s PathFinder as well, which enable us to discover namespace packages as well. This discovery is the center piece of the namespace package support, the other part being the construction of a dummy Module node whenever a namespace package root directory is requested during astroid’s import references.

  • Introduce a special attributes model

    Through this model, astroid starts knowing special attributes of certain Python objects, such as functions, classes, super objects and so on. This was previously possible before, but now the lookup and the attributes themselves are separated into a new module, objectmodel.py, which describes, in a more comprehensive way, the data model of each object.

  • Exceptions have their own object model

    Some of exceptions’s attributes, such as .args and .message, can’t be inferred correctly since they are descriptors that get transformed into the proper objects at runtime. This can cause issues with the static analysis, since they are inferred as different than what’s expected. Now when we’re creating instances of exceptions, we’re inferring a special object that knows how to transform those runtime attributes into the proper objects via a custom object model. Closes issue #81

  • dict.values, dict.keys and dict.items are properly inferred to their corresponding type, which also includes the proper containers for Python 3.

  • Fix a crash which occurred when a method had a same name as a builtin object, decorated at the same time by that builtin object ( a property for instance)

  • The inference can handle the case where the attribute is accessed through a subclass of a base class and the attribute is defined at the base class’s level, by taking in consideration a redefinition in the subclass.

    This should fix https://github.com/PyCQA/pylint/issues/432

  • Calling lambda methods (defined at class level) can be understood.

  • Don’t take in consideration invalid assignments, especially when __slots__ declaration forbids them.

    Close issue #332

  • Functional form of enums support accessing values through __call__.

  • Brain tips for the ssl library.

  • decoratornames() does not leak InferenceError anymore.

  • wildcard_imported_names() got replaced by _public_names()

    Our understanding of wildcard imports through __all__ was half baked to say at least, since we couldn’t account for modifications of the list, which results in tons of false positives. Instead, we replaced it with _public_names(), a method which returns all the names that are publicly available in a module, that is that don’t start with an underscore, even though this means that there is a possibility for other names to be leaked out even though they are not present in the __all__ variable.

    The method is private in 1.4.X.

  • unpack_infer raises InferenceError if it can’t operate with the given sequences of nodes.

  • Support accessing properties with super().

  • Enforce strong updates per frames.

    When looking up a name in a scope, Scope.lookup will return only the values which will be reachable after execution, as seen in the following code:

    a = 1 a = 2

    In this case it doesn’t make sense to return two values, but only the last one.

  • Add support for inference on threading.Lock

    As a matter of fact, astroid can infer on threading.RLock, threading.Semaphore, but can’t do it on threading.Lock (because it comes from an extension module).

  • pkg_resources brain tips are a bit more specific, by specifying proper returns.

  • The slots() method conflates all the slots from the ancestors into a list of current and parent slots.

    We’re doing this because this is the right semantics of slots, they get inherited, as long as each parent defines a __slots__ entry.

  • Some nodes got a new attribute, ‘ctx’, which tells in which context the said node was used.

    The possible values for the contexts are Load (‘a’), Del (‘del a’), Store (‘a = 4’) and the nodes that got the new attribute are Starred, Subscript, List and Tuple. Closes issue #267.

  • relative_to_absolute_name or methods calling it will now raise TooManyLevelsError when a relative import was trying to access something beyond the top-level package.

  • AstroidBuildingException is now AstroidBuildingError. The first name will exist until astroid 2.0.

  • Add two new exceptions, AstroidImportError and AstroidSyntaxError. They are subclasses of AstroidBuildingException and are raised when a module can’t be imported from various reasons. Also do_import_module lets the errors to bubble up without converting them to InferenceError. This particular conversion happens only during the inference.

  • Revert to using printf-style formatting in as_string, in order to avoid a potential problem with encodings when using .format. Closes issue #273. Patch by notsqrt.

  • assigned_stmts methods have the same signature from now on.

    They used to have different signatures and each one made assumptions about what could be passed to other implementations, leading to various possible crashes when one or more arguments weren’t given. Closes issue #277.

  • Fix metaclass detection, when multiple keyword arguments are used in class definition.

  • Add support for annotated variable assignments (PEP 526)

  • Starred expressions are now inferred correctly for tuple, list, set, and dictionary literals.

  • Support for asynchronous comprehensions introduced in Python 3.6.

    Fixes #399. See PEP530 for details.

What’s New in astroid 1.4.1?

Release Date: 2015-11-29

  • Add support for handling Uninferable nodes when calling as_string

    Some object, for instance List or Tuple can have, after inference, Uninferable as their elements, happening when their components weren’t couldn’t be inferred properly. This means that as_string needs to cope with expecting Uninferable nodes part of the other nodes coming for a string transformation. The patch adds a visit method in AsString and accept on Yes / Uninferable nodes. Closes issue #270.

What’s New in astroid 1.4.0?

Release Date: 2015-11-29

  • Class.getattr(‘__mro__’) returns the actual MRO. Closes issue #128.

  • The logilab-common dependency is not needed anymore as the needed code was integrated into astroid.

  • Generated enum member stubs now support IntEnum and multiple base classes.

  • astroid.builder.AstroidBuilder.string_build and astroid.builder.AstroidBuilder.file_build are now raising AstroidBuildingException when the parsing of the string raises a SyntaxError.

  • Add brain tips for multiprocessing.Manager and multiprocessing.managers.SyncManager.

  • Add some fixes which enhances the Jython support. The fix mostly includes updates to modutils, which is modified in order to properly lookup paths from live objects, which ends in $py.class, not pyc as for Python 2, Closes issue #83.

  • The Generator objects inferred with infer_call_result from functions have as parent the function from which they are returned.

  • Add brain tips for multiprocessing post Python 3.4+, where the module level functions are retrieved with getattr from a context object, leading to many no-member errors in Pylint.

  • Understand partially the 3-argument form of type. The only change is that astroid understands members passed in as dictionaries as the third argument.

  • .slots() will return an empty list for classes with empty slots. Previously it returned None, which is the same value for classes without slots at all. This was changed in order to better reflect what’s actually happening.

  • Improve the inference of Getattr nodes when dealing with abstract properties from the abc module.

    In astroid.bases.Instance._wrap_attr we had a detection code for properties, which basically inferred whatever a property returned, passing the results up the stack, to the igetattr() method. It handled only the builtin property but the new patch also handles a couple of other properties, such as abc.abstractproperty.

  • UnboundMethod.getattr calls the getattr of its _proxied object and doesn’t call super(…) anymore.

    It previously crashed, since the first ancestor in its mro was bases.Proxy and bases.Proxy doesn’t implement the .getattr method. Closes issue #91.

  • Don’t hard fail when calling .mro() on a class which has combined both newstyle and old style classes. The class in question is actually newstyle (and the __mro__ can be retrieved using Python).

    .mro() fallbacks to using .ancestors() in that case.

  • Class.local_attr and Class.local_attr_ancestors uses internally a mro lookup, using .mro() method, if they can.

    That means for newstyle classes, when trying to lookup a member using one of these functions, the first one according to the mro will be returned. This reflects nicely the reality, but it can have as a drawback the fact that it is a behaviour change (the previous behaviour was incorrect though). Also, having bases which can return multiple values when inferred will not work with the new approach, because .mro() only retrieves the first value inferred from a base.

  • Expose an implicit_metaclass() method in Class. This will return a builtins.type instance for newstyle classes.

  • Add two new exceptions for handling MRO error cases. DuplicateBasesError is emitted when duplicate bases are found in a class, InconsistentMroError is raised when the method resolution is determined to be inconsistent. They share a common class, MroError, which is a subclass of ResolveError, meaning that this change is backwards compatible.

  • Classes aren’t marked as interfaces anymore, in the type attribute.

  • Class.has_dynamic_getattr doesn’t return True for special methods which aren’t implemented in pure Python, as it is the case for extension modules.

    Since most likely the methods were coming from a live object, this implies that all of them will have __getattr__ and __getattribute__ present and it is wrong to consider that those methods were actually implemented.

  • Add basic support for understanding context managers.

    Currently, there’s no way to understand whatever __enter__ returns in a context manager and what it is binded using the as keyword. With these changes, we can understand bar in with foo() as bar, which will be the result of __enter__.

  • Add a new type of node, called inference objects. Inference objects are similar with AST nodes, but they can be obtained only after inference, so they can’t be found inside the original AST tree. Their purpose is to handle at astroid level some operations which can’t be handled when using brain transforms. For instance, the first object added is FrozenSet, which can be manipulated at astroid’s level (inferred, itered etc). Code such as this ‘frozenset((1,2))’ will not return an Instance of frozenset, without having access to its content, but a new objects.FrozenSet, which can be used just as a nodes.Set.

  • Add a new inference object called Super, which also adds support for understanding super calls. astroid understands the zero-argument form of super, specific to Python 3, where the interpreter fills itself the arguments of the call. Also, we are understanding the 2-argument form of super, both for bounded lookups (super(X, instance)) as well as for unbounded lookups (super(X, Y)), having as well support for validating that the object-or-type is a subtype of the first argument. The unbounded form of super (one argument) is not understood, since it’s useless in practice and should be removed from Python’s specification. Closes issue #89.

  • Add inference support for getattr builtin. Now getattr builtins are properly understood. Closes issue #103.

  • Add inference support for hasattr builtin. Closes issue #102.

  • Add ‘assert_equals’ method in nose.tools’s brain plugin.

  • Don’t leak StopIteration when inferring invalid UnaryOps (+[], +None etc.).

  • Improve the inference of UnaryOperands.

    When inferring unary operands, astroid looks up the return value of __pos__, __neg__ and __invert__ to determine the inferred value of ~node, +node or -node.

  • Improve the inference of six.moves, especially when using from … import … syntax. Also, we added a new fail import hook for six.moves, which fixes the import-error false positive from pylint. Closes issue #107.

  • Make the first steps towards detecting type errors for unary and binary operations.

    In exceptions, one object was added for holding information about a possible UnaryOp TypeError, object called UnaryOperationError. Even though the name suggests it’s an exception, it’s actually not one. When inferring UnaryOps, we use this special object to mark a possible TypeError, object which can be interpreted by pylint in order to emit a new warning. We are also exposing a new method for UnaryOps, called type_errors, which returns a list of UnaryOperationsError.

  • A new method was added to the AST nodes, ‘bool_value’. It is used to deduce the value of a node when used in a boolean context, which is useful for both inference, as well as for data flow analysis, where we are interested in what branches will be followed when the program will be executed. bool_value returns True, False or YES, if the node’s boolean value can’t be deduced. The method is used when inferring the unary operand not. Thus, not something will result in calling something.bool_value and negating the result, if it is a boolean.

  • Add inference support for boolean operations (and and not).

  • Add inference support for the builtin callable.

  • astroid.inspector was moved to pylint.pyreverse, since it is the only known client of this module. No other change was made to the exported API.

  • astroid.utils.ASTWalker and astroid.utils.LocalsVisitor were moved to pylint.pyreverse.utils.

  • Add inference support for the builtin bool.

  • Add igetattr method to scoped_nodes.Function.

  • Add support for Python 3.5’s MatMul operation: see PEP 465 for more details.

  • NotImplemented is detected properly now as being part of the builtins module. Previously trying to infer the Name(NotImplemented) returned an YES object.

  • Add astroid.helpers, a module of various useful utilities which don’t belong yet into other components. Added object_type, a function which can be used to obtain the type of almost any astroid object, similar to how the builtin type works.

  • Understand the one-argument form of the builtin type.

    This uses the recently added astroid.helpers.object_type in order to retrieve the Python type of the first argument of the call.

  • Add helpers.is_supertype and helpers.is_subtype, two functions for checking if an object is a super/sub type of another.

  • Improve the inference of binary arithmetic operations (normal and augmented).

  • Add support for retrieving TypeErrors for binary arithmetic operations.

    The change is similar to what was added for UnaryOps: a new method called type_errors for both AugAssign and BinOp, which can be used to retrieve type errors occurred during inference. Also, a new exception object was added, BinaryOperationError.

  • Lambdas found at class level, which have a self argument, are considered BoundMethods when accessing them from instances of their class.

  • Add support for multiplication of tuples and lists with instances which provides an __index__ returning-int method.

  • Add support for indexing containers with instances which provides an __index__ returning-int method.

  • Star unpacking in assignments returns properly a list, not the individual components. Closes issue #138.

  • Add annotation support for function.as_string(). Closes issue #37.

  • Add support for indexing bytes on Python 3.

  • Add support for inferring subscript on instances, which will use __getitem__. Closes issue #124.

  • Add support for pkg_resources.declare_namespaces.

  • Move pyreverse specific modules and functionality back into pyreverse (astroid.manager.Project, astroid.manager.Manager.project_from_files).

  • Understand metaclasses added with six.add_metaclass decorator. Closes issue #129.

  • Add a new convenience API, astroid.parse, which can be used to retrieve an astroid AST from a source code string, similar to how ast.parse can be used to obtain a Python AST from a source string. This is the test_utils.build_module promoted to a public API.

  • do_import_module passes the proper relative_only flag if the level is higher than 1. This has the side effect that using from .something import something in a non-package will finally result in an import-error on Pylint’s side. Until now relative_only was ignored, leading to the import of something, if it was globally available.

  • Add get_wrapping_class API to scoped_nodes, which can be used to retrieve the class that wraps a node.

  • Class.getattr looks by default in the implicit and the explicit metaclasses, which is type on Python 3.

    Closes issue #114.

  • There’s a new separate step for transforms.

    Until now, the transforms were applied at the same time the tree was being built. This was problematic if the transform functions were using inference, since the inference was executed on a partially constructed tree, which led to failures when post-building information was needed (such as setting the _from_names for the From imports). Now there’s a separate step for transforms, which are applied using transform.TransformVisitor. There’s a couple of other related changes:

    • astroid.parse and AstroidBuilder gained a new parameter apply_transforms, which is a boolean flag, which will control if the transforms are applied. We do this because there are uses when the vanilla tree is wanted, without any implicit modification.
    • the transforms are also applied for builtin modules, as a side effect of the fact that transform visiting was moved in AstroidBuilder._post_build from AstroidBuilder._data_build.

    Closes issue #116.

  • Class._explicit_metaclass is now a public API, in the form of Class.declared_metaclass.

    Class.mro remains the de facto method for retrieving the metaclass of a class, which will also do an evaluation of what declared_metaclass returns.

  • Understand slices of tuples, lists, strings and instances with support for slices.

    Closes issue #137.

  • Add proper grammatical names for inferred and ass_type methods, namely inferred and assign_type.

    The old methods will raise PendingDeprecationWarning, being slated for removal in astroid 2.0.

  • Add new AST names in order to be similar to the ones from the builtin ast module.

    With this change, Getattr becomes Attributes, Backquote becomes Repr, Class is ClassDef, Function is FunctionDef, Discard is Expr, CallFunc is Call, From is ImportFrom, AssName is AssignName and AssAttr is AssignAttr. The old names are maintained for backwards compatibility and they are interchangeable, in the sense that using Discard will use Expr under the hood and the implemented visit_discard in checkers will be called with Expr nodes instead. The AST does not contain the old nodes, only the interoperability between them hides this fact. Recommendations to move to the new nodes are emitted accordingly, the old names will be removed in astroid 2.0.

  • Add support for understanding class creation using type.__new__(mcs, name, bases, attrs)`

    Until now, inferring this kind of calls resulted in Instances, not in classes, since astroid didn’t understand that the presence of the metaclass in the call leads to a class creating, not to an instance creation.

  • Understand the slice builtin. Closes issue #184.

  • Add brain tips for numpy.core, which should fix Pylint’s #453.

  • Add a new node, DictUnpack, which is used to represent the unpacking of a dictionary into another dictionary, using PEP 448 specific syntax ({1:2, **{2:3})

    This is a different approach than what the builtin ast module does, since it just uses None to represent this kind of operation, which seems conceptually wrong, due to the fact the AST contains non-AST nodes. Closes issue #206.

What’s New in astroid 1.3.6?

Release Date: 2015-03-14

  • Class.slots raises NotImplementedError for old style classes. Closes issue #67.
  • Add a new option to AstroidManager, optimize_ast, which controls if peephole optimizer should be enabled or not. This prevents a regression, where the visit_binop method wasn’t called anymore with astroid 1.3.5, due to the differences in the resulting AST. Closes issue #82.

What’s New in astroid 1.3.5?

Release Date: 2015-03-11

  • Add the ability to optimize small ast subtrees, with the first use in the optimization of multiple BinOp nodes. This removes recursivity in the rebuilder when dealing with a lot of small strings joined by the addition operator. Closes issue #59.

  • Obtain the methods for the nose brain tip through an unittest.TestCase instance. Closes Pylint issue #457.

  • Fix a crash which occurred when a class was the ancestor of itself. Closes issue #78.

  • Improve the scope_lookup method for Classes regarding qualified objects, with an attribute name exactly as one provided in the class itself.

    For example, a class containing an attribute ‘first’, which was also an import and which had, as a base, a qualified name or a Gettattr node, in the form ‘module.first’, then Pylint would have inferred the first name as the function from the Class, not the import. Closes Pylint issue #466.

  • Implement the assigned_stmts operation for Starred nodes, which was omitted when support for Python 3 was added in astroid. Closes issue #36.

What’s New in astroid 1.3.4?

Release Date: 2015-01-17

  • Get the first element from the method list when obtaining the functions from nose.tools.trivial. Closes Pylint issue #448.

What’s New in astroid 1.3.3?

Release Date: 2015-01-16

  • Restore file_stream to a property, but deprecate it in favour of the newly added method Module.stream. By using a method instead of a property, it will be easier to properly close the file right after it is used, which will ensure that no file descriptors are leaked. Until now, due to the fact that a module was cached, it was not possible to close the file_stream anywhere. file_stream will start emitting PendingDeprecationWarnings in astroid 1.4, DeprecationWarnings in astroid 1.5 and it will be finally removed in astroid 1.6.
  • Add inference tips for ‘tuple’, ‘list’, ‘dict’ and ‘set’ builtins.
  • Add brain definition for most string and unicode methods
  • Changed the API for Class.slots. It returns None when the class doesn’t define any slots. Previously, for both the cases where the class didn’t have slots defined and when it had an empty list of slots, Class.slots returned an empty list.
  • Add a new method to Class nodes, ‘mro’, for obtaining the the method resolution order of the class.
  • Add brain tips for six.moves. Closes issue #63.
  • Improve the detection for functions decorated with decorators which returns static or class methods.
  • .slots() can contain unicode strings on Python 2.
  • Add inference tips for nose.tools.

What’s New in astroid 1.3.2?

Release Date: 2014-11-22

  • Fixed a crash with invalid subscript index.
  • Implement proper base class semantics for Python 3, where every class derives from object.
  • Allow more fine-grained control over C extension loading in the manager.

What’s New in astroid 1.3.1?

Release Date: 2014-11-21

  • Fixed a crash issue with the pytest brain module.

What’s New in astroid 1.3.0?

Release Date: 2014-11-20

  • Fix a maximum recursion error occurred during the inference, where statements with the same name weren’t filtered properly. Closes pylint issue #295.
  • Check that EmptyNode has an underlying object in EmptyNode.has_underlying_object.
  • Simplify the understanding of enum members.
  • Fix an infinite loop with decorator call chain inference, where the decorator returns itself. Closes issue #50.
  • Various speed improvements. Patch by Alex Munroe.
  • Add pytest brain plugin. Patch by Robbie Coomber.
  • Support for Python versions < 2.7 has been dropped, and the source has been made compatible with Python 2 and 3. Running 2to3 on installation for Python 3 is not needed anymore.
  • astroid now depends on six.
  • modutils._module_file opens __init__.py in binary mode. Closes issues #51 and #13.
  • Only C extensions from trusted sources (the standard library) are loaded into the examining Python process to build an AST from the live module.
  • Path names on case-insensitive filesystems are now properly handled. This fixes the stdlib detection code on Windows.
  • Metaclass-generating functions like six.with_metaclass are now supported via some explicit detection code.
  • astroid.register_module_extender has been added to generalize the support for module extenders as used by many brain plugins.
  • brain plugins can now register hooks to handle failed imports, as done by the gobject-introspection plugin.
  • The modules have been moved to a separate package directory, setup.py develop now works correctly.

What’s New in astroid 1.2.1?

Release Date: 2014-08-24

  • Fix a crash occurred when inferring decorator call chain. Closes issue #42.
  • Set the parent of vararg and kwarg nodes when inferring them. Closes issue #43.
  • namedtuple inference knows about ‘_fields’ attribute.
  • enum members knows about the methods from the enum class.
  • Name inference will lookup in the parent function of the current scope, in case searching in the current scope fails.
  • Inference of the functional form of the enums takes into consideration the various inputs that enums accepts.
  • The inference engine handles binary operations (add, mul etc.) between instances.
  • Fix an infinite loop in the inference, by returning a copy of instance attributes, when calling ‘instance_attr’. Closes issue #34 (patch by Emile Anclin).
  • Don’t crash when trying to infer unbound object.__new__ call. Closes issue #11.

What’s New in astroid 1.2.0?

Release Date: 2014-07-25

  • Function nodes can detect decorator call chain and see if they are decorated with builtin descriptors (classmethod and staticmethod).
  • infer_call_result called on a subtype of the builtin type will now return a new Class rather than an Instance.
  • Class.metaclass() now handles module-level __metaclass__ declaration on python 2, and no longer looks at the __metaclass__ class attribute on python 3.
  • Function nodes can detect if they are decorated with subclasses of builtin descriptors when determining their type (classmethod and staticmethod).
  • Add slots method to Class nodes, for retrieving the list of valid slots it defines.
  • Expose function annotation to astroid: Arguments node exposes ‘varargannotation’, ‘kwargannotation’ and ‘annotations’ attributes, while Function node has the ‘returns’ attribute.
  • Backported most of the logilab.common.modutils module there, as most things there are for pylint/astroid only and we want to be able to fix them without requiring a new logilab.common release
  • Fix names grabbed using wildcard import in “absolute import mode” (ie with absolute_import activated from the __future__ or with python 3). Fix pylint issue #58.
  • Add support in pylint-brain for understanding enum classes.

What’s New in astroid 1.1.1?

Release Date: 2014-04-30

  • Class.metaclass() looks in ancestors when the current class does not define explicitly a metaclass.
  • Do not cache modules if a module with the same qname is already known, and only return cached modules if both name and filepath match. Fixes pylint Bitbucket issue #136.

What’s New in astroid 1.1.0?

Release Date: 2014-04-18

  • All class nodes are marked as new style classes for Py3k.
  • Add a metaclass function to Class nodes to retrieve their metaclass.
  • Add a new YieldFrom node.
  • Add support for inferring arguments to namedtuple invocations.
  • Make sure that objects returned for namedtuple inference have parents.
  • Don’t crash when inferring nodes from with clauses with multiple context managers. Closes #18.
  • Don’t crash when a class has some __call__ method that is not inferable. Closes #17.
  • Unwrap instances found in .ancestors(), by using their _proxied class.

What’s New in astroid 1.0.1?

Release Date: 2013-10-18

  • fix py3k/windows installation issue (issue #4)
  • fix bug with namedtuple inference (issue #3)
  • get back gobject introspection from pylint-brain
  • fix some test failures under pypy and py3.3, though there is one remaining in each of these platform (2.7 tests are all green)

What’s New in astroid 1.0.0?

Release Date: 2013-07-29

  • Fix some omissions in py2stdlib’s version of hashlib and add a small test for it.
  • Properly recognize methods annotated with abc.abstract{property,method} as abstract.
  • Allow transformation functions on any node, providing a register_transform function on the manager instead of the
register_transformer to make it more flexible wrt node selection
  • Use the new transformation API to provide support for namedtuple (actually in pylint-brain, closes #8766)
  • Added the test_utils module for building ASTs and extracting deeply nested nodes for easier testing.
  • Add support for py3k’s keyword only arguments (PEP 3102)
  • RENAME THE PROJECT to astroid

What’s New in astroid 0.24.3?

Release Date: 2013-04-16

  • #124360 [py3.3]: Don’t crash on ‘yield from’ nodes
  • #123062 [pylint-brain]: Use correct names for keywords for urlparse
  • #123056 [pylint-brain]: Add missing methods for hashlib
  • #123068: Fix inference for generator methods to correctly handle yields in lambdas.
  • #123068: Make sure .as_string() returns valid code for yields in expressions.
  • #47957: Set literals are now correctly treated as inference leaves.
  • #123074: Add support for inference of subscript operations on dict literals.

What’s New in astroid 0.24.2?

Release Date: 2013-02-27

  • pylint-brain: more subprocess.Popen faking (see #46273)
  • #109562 [jython]: java modules have no __doc__, causing crash
  • #120646 [py3]: fix for python3.3 _ast changes which may cause crash
  • #109988 [py3]: test fixes

What’s New in astroid 0.24.1?

Release Date: 2012-10-05

  • #106191: fix __future__ absolute import w/ From node
  • #50395: fix function fromlineno when some decorator is splited on multiple lines (patch by Mark Gius)
  • #92362: fix pyreverse crash on relative import
  • #104041: fix crash ‘module object has no file_encoding attribute’
  • #4294 (pylint-brain): bad inference on mechanize.Browser.open
  • #46273 (pylint-brain): bad inference subprocess.Popen.communicate

What’s New in astroid 0.24.0?

Release Date: 2012-07-18

  • include pylint brain extension, describing some stuff not properly understood until then. (#100013, #53049, #23986, #72355)
  • #99583: fix raw_building.object_build for pypy implementation
  • use open rather than file in scoped_nodes as 2to3 miss it

What’s New in astroid 0.23.1?

Release Date: 2011-12-08

  • #62295: avoid “OSError: Too many open files” by moving .file_stream as a Module property opening the file only when needed
  • Lambda nodes should have a name attribute
  • only call transformers if modname specified

What’s New in astroid 0.23.0?

Release Date: 2011-10-07

  • #77187: ancestor() only returns the first class when inheriting from two classes coming from the same module
  • #76159: putting module’s parent directory on the path causes problems linting when file names clash
  • #74746: should return empty module when __main__ is imported (patch by google)
  • #74748: getitem protocol return constant value instead of a Const node (patch by google)
  • #77188: support lgc.decorators.classproperty
  • #77253: provide a way for user code to register astng “transformers” using manager.register_transformer(callable) where callable will be called after an astng has been built and given the related module node as argument

What’s New in astroid 0.22.0?

Release Date: 2011-07-18

  • added column offset information on nodes (patch by fawce)
  • #70497: Crash on AttributeError: ‘NoneType’ object has no attribute ‘_infer_name’
  • #70381: IndentationError in import causes crash
  • #70565: absolute imports treated as relative (patch by Jacek Konieczny)
  • #70494: fix file encoding detection with python2.x
  • py3k: __builtin__ module renamed to builtins, we should consider this to properly build ast for builtin objects

What’s New in astroid 0.21.1?

Release Date: 2011-01-11

  • python3: handle file encoding; fix a lot of tests
  • fix #52006: “True” and “False” can be assigned as variable in Python2x
  • fix #8847: pylint doesn’t understand function attributes at all
  • fix #8774: iterator / generator / next method
  • fix bad building of ast from living object w/ container classes (eg dict, set, list, tuple): contained elements should be turned to ast as well (not doing it will much probably cause crash later)
  • somewhat fix #57299 and other similar issue: Exception when trying to validate file using PyQt’s PyQt4.QtCore module: we can’t do much about it but at least catch such exception to avoid crash

What’s New in astroid 0.21.0?

Release Date: 2010-11-15

  • python3.x: first python3.x release
  • fix #37105: Crash on AttributeError: ‘NoneType’ object has no attribute ‘_infer_name’
  • python2.4: drop python < 2.5 support

What’s New in astroid 0.20.4?

Release Date: 2010-10-27

  • fix #37868 #37665 #33638 #37909: import problems with absolute_import_activated
  • fix #8969: false positive when importing from zip-safe eggs
  • fix #46131: minimal class decorator support
  • minimal python2.7 support (dict and set comprehension)
  • important progress on Py3k compatibility

What’s New in astroid 0.20.3?

Release Date: 2010-09-28

  • restored python 2.3 compatibility
  • fix #45959: AttributeError: ‘NoneType’ object has no attribute ‘frame’, due
    to handling of __class__ when importing from living object (because of missing source code or C-compiled object)

What’s New in astroid 0.20.2?

Release Date: 2010-09-10

  • fix astng building bug: we’ve to set module.package flag at the node creation time otherwise we’ll miss this information when inferring relative import during the build process (this should fix for instance some problems with numpy)
  • added __subclasses__ to special class attribute
  • fix Class.interfaces so that no InferenceError raised on empty __implements__
  • yield YES on multiplication of tuple/list with non valid operand

What’s New in astroid 0.20.1?

Release Date: 2010-05-11

  • fix licensing to LGPL
  • add ALL_NODES_CLASSES constant to nodes module
  • nodes redirection cleanup (possible since refactoring)
  • bug fix for python < 2.5: add Delete node on Subscript nodes if we are in a

del context

What’s New in astroid 0.20.0?

Release Date: 2010-03-22

  • fix #20464: raises ?TypeError: ‘_Yes’ object is not iterable? on list inference
  • fix #19882: pylint hangs
  • fix #20759: crash on pyreverse UNARY_OP_METHOD KeyError ‘~’
  • fix #20760: crash on pyreverse : AttributeError: ‘Subscript’ object has no attribute ‘infer_lhs’
  • fix #21980: [Python-modules-team] Bug#573229 : Pylint hangs; improving the cache yields a speed improvement on big projects
  • major refactoring: rebuild the tree instead of modify / monkey patching
  • fix #19641: “maximum recursion depth exceeded” messages w/ python 2.6 this was introduced by a refactoring
  • Ned Batchelder patch to properly import eggs with Windows line endings. This fixes a problem with pylint not being able to import setuptools.
  • Winfried Plapper patches fixing .op attribute value for AugAssign nodes, visit_ifexp in nodes_as_string
  • Edward K. Ream / Tom Fleck patch closes #19641 (maximum recursion depth exceeded” messages w/ python 2.6), see https://bugs.launchpad.net/pylint/+bug/456870

What’s New in astroid 0.19.3?

Release Date: 2009-12-18

  • fix name error making 0.19.2 almost useless

What’s New in astroid 0.19.2?

Release Date: 2009-12-18

  • fix #18773: inference bug on class member (due to bad handling of instance / class nodes “bounded” to method calls)
  • fix #9515: strange message for non-class “Class baz has no egg member” (due to bad inference of function call)
  • fix #18953: inference fails with augmented assignment (special case for augmented assignement in infer_ass method)
  • fix #13944: false positive for class/instance attributes (Instance.getattr should return assign nodes on instance classes as well as instance.
  • include spelling fixes provided by Dotan Barak

What’s New in astroid 0.19.1?

Release Date: 2009-08-27

  • fix #8771: crash on yield expression
  • fix #10024: line numbering bug with try/except/finally
  • fix #10020: when building from living object, __name__ may be None
  • fix #9891: help(logilab.astng) throws TypeError
  • fix #9588: false positive E1101 for augmented assignment

What’s New in astroid 0.19.0?

Release Date: 2009-03-25

  • fixed python 2.6 issue (tests ok w/ 2.4, 2.5, 2.6. Anyone using 2.2 / 2.3 to tell us if it works?)
  • some understanding of the __builtin__.property decorator
  • inference: introduce UnboundMethod / rename InstanceMethod to BoundMethod

What’s New in astroid 0.18.0?

Release Date: 2009-03-19

  • major api / tree structure changes to make it works with compiler and python >= 2.5 _ast module
  • cleanup and refactoring on the way

What’s New in astroid 0.17.4?

Release Date: 2008-11-19

  • fix #6015: filter statements bug triggering W0631 false positive in pylint
  • fix #5571: Function.is_method() should return False on module level functions decorated by staticmethod/classmethod (avoid some crash in pylint)
  • fix #5010: understand python 2.5 explicit relative imports

What’s New in astroid 0.17.3?

Release Date: 2008-09-10

  • fix #5889: astng crash on certain pyreverse projects
  • fix bug w/ loop assignment in .lookup
  • apply Maarten patch fixing a crash on TryFinalaly.block_range and fixing ‘else’/’final’ block line detection

What’s New in astroid 0.17.2?

Release Date: 2008-01-14

  • “with” statement support, patch provided by Brian Hawthorne
  • fixed recursion arguments in nodes_of_class method as notified by Dave Borowitz
  • new InstanceMethod node introduced to wrap bound method (e.g. Function node), patch provided by Dave Borowitz

What’s New in astroid 0.17.1?

Release Date: 2007-06-07

  • fix #3651: crash when callable as default arg
  • fix #3670: subscription inference crash in some cases
  • fix #3673: Lambda instance has no attribute ‘pytype’
  • fix crash with chained “import as”
  • fix crash on numpy
  • fix potential InfiniteRecursion error with builtin objects
  • include patch from Marien Zwart fixing some test / py 2.5
  • be more error resilient when accessing living objects from external code in the manager

What’s New in astroid 0.17.0?

Release Date: 2007-02-22

  • api change to be able to infer using a context (used to infer function call result only for now)
  • slightly better inference on astng built from living object by trying to infer dummy nodes (able to infer ‘help’ builtin for instance)
  • external attribute definition support
  • basic math operation inference
  • new pytype method on possibly inferred node (e.g. module, classes, const…)
  • fix a living object astng building bug, which was making “open” uninferable
  • fix lookup of name in method bug (#3289)
  • fix decorator lookup bug (#3261)

What’s New in astroid 0.16.3?

Release Date: 2006-11-23

  • enhance inference for the subscription notation (motivated by a patch from Amaury) and for unary sub/add

What’s New in astroid 0.16.2?

Release Date: 2006-11-15

  • grrr, fixed python 2.3 incompatibility introduced by generator expression scope handling
  • upgrade to avoid warnings with logilab-common 0.21.0 (on which now depends so)
  • backported astutils module from logilab-common

What’s New in astroid 0.16.1?

Release Date: 2006-09-25

  • python 2.5 support, patch provided by Marien Zwart
  • fix [Class|Module].block_range method (this fixes pylint’s inline disabling of messages on classes/modules)
  • handle class.__bases__ and class.__mro__ (proper metaclass handling still needed though)
  • drop python2.2 support: remove code that was working around python2.2
  • fixed generator expression scope bug
  • patch transformer to extract correct line information

What’s New in astroid 0.16.0?

Release Date: 2006-04-19

  • fix living object building to consider classes such as property as a class instead of a data descriptor
  • fix multiple assignment inference which was discarding some solutions
  • added some line manipulation methods to handle pylint’s block messages control feature (Node.last_source_line(), None.block_range(lineno)

What’s New in astroid 0.15.1?

Release Date: 2006-03-10

  • fix avoiding to load everything from living objects… Thanks Amaury!
  • fix a possible NameError in Instance.infer_call_result

What’s New in astroid 0.15.0?

Release Date: 2006-03-06

  • fix possible infinite recursion on global statements (close #10342) and in various other cases…
  • fix locals/globals interactions when the global statement is used (close #10434)
  • multiple inference related bug fixes
  • associate List, Tuple and Dict and Const nodes to their respective classes
  • new .ass_type method on assignment related node, returning the assignment type node (Assign, For, ListCompFor, GenExprFor, TryExcept)
  • more API refactoring… .resolve method has disappeared, now you have .ilookup on every nodes and .getattr/.igetattr on node supporting the attribute protocol
  • introduced a YES object that may be returned when there is ambiguity on an inference path (typically function call when we don’t know arguments value)
  • builder try to instantiate builtin exceptions subclasses to get their instance attribute

What’s New in astroid 0.14.0?

Release Date: 2006-01-10

  • some major inference improvements and refactoring ! The drawback is the introduction of some non backward compatible change in the API but it’s imho much cleaner and powerful now :)
  • new boolean property .newstyle on Class nodes (implements #10073)
  • new .import_module method on Module node to help in .resolve refactoring
  • .instance_attrs has list of assignments to instance attribute dictionary as value instead of one
  • added missing GenExprIf and GenExprInner nodes, and implements as_string for each generator expression related nodes
  • specifically catch KeyboardInterrupt to reraise it in some places
  • fix so that module names are always absolute
  • fix .resolve on package where a subpackage is imported in the __init__ file
  • fix a bug regarding construction of Function node from living object with earlier version of python 2.4
  • fix a NameError on Import and From self_resolve method
  • fix a bug occurring when building an astng from a living object with a property
  • lint fixes

What’s New in astroid 0.13.1?

Release Date: 2005-11-07

  • fix bug on building from living module the same object in encountered more than once time (e.g. builtins.object) (close #10069)
  • fix bug in Class.ancestors() regarding inner classes (close #10072)
  • fix .self_resolve() on From and Module nodes to handle package precedence over module (close #10066)
  • locals dict for package contains __path__ definition (close #10065)
  • astng provide GenExpr and GenExprFor nodes with python >= 2.4 (close #10063)
  • fix python2.2 compatibility (close #9922)
  • link .__contains__ to .has_key on scoped node to speed up execution
  • remove no more necessary .module_object() method on From and Module nodes
  • normalize parser.ParserError to SyntaxError with python 2.2

What’s New in astroid 0.13.0?

Release Date: 2005-10-21

  • .locals and .globals on scoped node handle now a list of references
    to each assignment statements instead of a single reference to the first assignment statement.
  • fix bug with manager.astng_from_module_name when a context file is given (notably fix ZODB 3.4 crash with pylint/pyreverse)
  • fix Compare.as_string method
  • fix bug with lambda object missing the “type” attribute
  • some minor refactoring
  • This package has been extracted from the logilab-common package, which will be kept for some time for backward compatibility but will no longer be maintained (this explains that this package is starting with the 0.13 version number, since the fork occurs with the version released in logilab-common 0.12).