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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_default_config():
 """ Create a default configuration object, with all parameters filled """

    config = configparser.RawConfigParser()
    config.add_section('global')
    config.set('global', 'env_source_rc', False)
    config.add_section('shell')
    config.set('shell', 'bash', "true")
    config.set('shell', 'zsh', "true")
    config.set('shell', 'gui', "true")
    return config