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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 _crs_parser(cls, value):
 """ Parses user input for class CRS :param cls: class object :param value: user input for CRS :type value: str, int or CRS """

    parsed_value = value
    if isinstance(parsed_value, int):
        parsed_value = str(parsed_value)
    if isinstance(parsed_value, str):
        parsed_value = parsed_value.strip('epsgEPSG: ')
    return super(_BaseCRS, cls).__new__(cls, parsed_value)