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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 validate_instance_id(self, instid):
        ''' Validate instance ID '''
        # 1-63 alphanumeric characters, first must be a letter.
        if re.match('[\w-]+$', instid) is not None:
            if len(instid) <= 63 and len(instid) >= 1:
                if instid[0].isalpha():
                    return True
        return "*** Error: Instance ids must be 1-63 alphanumeric characters, \
            first is a letter."