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- """
- This module adds several functions for interactive source code inspection.
- """
- from sympy.utilities.decorator import deprecated
- import inspect
- @deprecated(
- """
- The source() function is deprecated. Use inspect.getsource() instead, or
- if you are in IPython or Jupyter, the ?? feature.
- """,
- deprecated_since_version="1.3",
- active_deprecations_target="deprecated-source",
- )
- def source(object):
- """
- Prints the source code of a given object.
- .. deprecated:: 1.3
- The ``source()`` function is deprecated. Use ``inspect.getsource()`` or
- ``??`` in IPython/Jupyter instead.
- """
- print('In file: %s' % inspect.getsourcefile(object))
- print(inspect.getsource(object))
- def get_class(lookup_view):
- """
- Convert a string version of a class name to the object.
- For example, get_class('sympy.core.Basic') will return
- class Basic located in module sympy.core
- """
- if isinstance(lookup_view, str):
- mod_name, func_name = get_mod_func(lookup_view)
- if func_name != '':
- lookup_view = getattr(
- __import__(mod_name, {}, {}, ['*']), func_name)
- if not callable(lookup_view):
- raise AttributeError(
- "'%s.%s' is not a callable." % (mod_name, func_name))
- return lookup_view
- def get_mod_func(callback):
- """
- splits the string path to a class into a string path to the module
- and the name of the class.
- Examples
- ========
- >>> from sympy.utilities.source import get_mod_func
- >>> get_mod_func('sympy.core.basic.Basic')
- ('sympy.core.basic', 'Basic')
- """
- dot = callback.rfind('.')
- if dot == -1:
- return callback, ''
- return callback[:dot], callback[dot + 1:]
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