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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 exec_module(self, module):
 """Execute the module using the old imp."""

        path = [os.path.dirname(module.__file__)]  # file should have been resolved before (module creation)
        file = None
        try:
            file, pathname, description = imp.find_module(module.__name__.rpartition('.')[-1], path)
            module = imp.load_module(module.__name__, file, pathname, description)
        finally:
            if file:
                file.close()