U L?hB@sdZddlmZdgZdS)a Unified place for determining if external dependencies are installed or not. You should import all external modules using the import_module() function. For example >>> from sympy.external import import_module >>> numpy = import_module('numpy') If the resulting library is not installed, or if the installed version is less than a given minimum version, the function will return None. Otherwise, it will return the library. See the docstring of import_module() for more information. ) import_modulerN)__doc__Zsympy.external.importtoolsr__all__rrI/var/www/html/venv/lib/python3.8/site-packages/sympy/external/__init__.pys