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"""
This module adds several functions for interactive source code inspection.
"""
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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