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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_posix_property(value, mode=POSIX):
 """Retrieve the posix category."""


    if mode == POSIX_BYTES:
        return unidata.ascii_posix_properties[value]
    elif mode == POSIX_UNICODE:
        return unidata.unicode_binary[
            ('^posix' + value[1:]) if value.startswith('^') else ('posix' + value)
        ]
    else:
        return unidata.unicode_posix_properties[value]