<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def __import_file(self, f):
 """Import the specified file and return the imported module :param f: the file to import :type f: str :returns: The imported module :rtype: module :raises: None """

        directory, module_name = os.path.split(f)
        module_name = os.path.splitext(module_name)[0]

        path = list(sys.path)
        sys.path.insert(0, directory)
        module = __import__(module_name)
        return module