class Test(obj):
def __init__(self): pass def _is_flag(self): try: v_sql=""" Select count(*) From tablename """ push_ctrl_conn=oracle('ETL_TEST') self.reach_flag=push_ctrl_conn.runsql(v_sql,1)[0][0] except Exception,e: self._set_scan_state('22', str(e)) finally: push_ctrl_conn.close() def run(self): self._is_flag()ifname== '__main__':
test_case=Test() test_case.run()类似这种格式,然后就报了
UnboundLocalError: local variable 'push_ctrl_conn' referenced before assignment
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The
try syntax block may not be executed, that is,
push_ctrl_connmay not be assigned a value. A very common mistake, generally you can assign a value before the try syntax.For this kind of connection requirement, the context manager function is generally used. I guess the instance of the oracle library also supports it.