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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 create_module_rst_file(module_name):
 """Function for creating content in each .rst file for a module. :param module_name: name of the module. :type module_name: str :returns: A content for auto module. :rtype: str """


    return_text = 'Module:  ' + module_name
    dash = '=' * len(return_text)
    return_text += '\n' + dash + '\n\n'
    return_text += '.. automodule:: ' + module_name + '\n'
    return_text += '   :members:\n\n'

    return return_text