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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 get_module(name: str) -> typing.Union[types.ModuleType, None]: """ Retrieves the loaded module for the given module name or returns None if no such module has been loaded. :param name: The name of the module to be retrieved :return: Either the loaded module with the specified name, or None if no such module has been imported. """

    return sys.modules.get(name)