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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 log_commit( self, block_id, vtxindex, op, opcode, op_data ):
 """ Log a committed operation """


        debug_op = self.sanitize_op( op_data )
        if 'history' in debug_op:
            del debug_op['history'] 

        log.debug("COMMIT %s (%s) at (%s, %s) data: %s", opcode, op, block_id, vtxindex, 
                ", ".join( ["%s='%s'" % (k, debug_op[k]) for k in sorted(debug_op.keys())] ) )

        return