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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_cgi_parameter_bool(form: cgi.FieldStorage, key: str) -> bool: """ Extracts a boolean parameter from a CGI form, on the assumption that ``"1"`` is ``True`` and everything else is ``False``. """

    return is_1(get_cgi_parameter_str(form, key))