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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _import(func):
 """Return the namespace path to the function"""

        func_name = func.__name__

        # from foo.bar import func // func()
        # WARNING: May be broken in IPython, in which case the widget will use a fallback
        if func_name in globals():
            return func_name

        # import foo.bar // foo.bar.func()
        module_name = func.__module__
        submodules = module_name.split('.')

        if submodules[0] in globals():
            return module_name + '.' + func_name

        # from foo import bar // bar.func()
        for i in range(len(submodules)):
            m = submodules[i]
            if m in globals():
                return '.'.join(submodules[i:]) + '.' + func_name

        # import foo.bar as fb // fb.func()
        module_ref = sys.modules[func.__module__]
        all_globals = globals()

        for n in all_globals:
            if all_globals[n] == module_ref:
                return n + '.' + func_name

        # Not Found, return function name
        return func_name