小编Pra*_*vin的帖子

任何人都可以帮助我了解何时使用:NEW和:OLD在PLSQL块中,我发现很难理解它们的用法.

我有一个带有钩子的api。我想将其修补到我的custom_function。知道我该怎么做吗？我已经修补falcon.before了我的custom_falcon_before。

class TestModel(MyTestCase):
    def falcon_before(self, model_exists):
        return model_exists

    def model_exists(self, req, resp, resource, params, require_exists):
        pass

    @patch("app.views.expect_model_existence", side_effect=model_exists)
    @patch("falcon.before", side_effect=falcon_before)
    def test_delete(self, falcon_before, model_exists):
        import falcon
        print(falcon_before is falcon.before)
        print(model_exists is expect_model_existence)

第二个打印是False。

我的API模型如下

class SingleModel:

    @falcon.before(expect_model_existence, True)
    def on_delete(self, req, resp, model_id):
        pass

假设我有三个表,A,B和C.
我做了加入表A和表B,现在我想加入结果AB和表c.
我是否需要创建视图然后执行加入或需要通过嵌套查询执行此操作？

import sys
import paramiko as pm
import os


def mdbAuto(req):
        HOST = 'xxx.xxx.xxx.xxx'
        USER = 'user'
        PASSWORD = 'password'

        client = pm.SSHClient()
        client.load_system_host_keys()
        client.set_missing_host_key_policy(pm.AutoAddPolicy())
        client.connect(HOST, username=USER, password=PASSWORD)

        channel = client.invoke_shell()
        stdin = channel.makefile('wb')
        stdout = channel.makefile('rb')
        reqID = int(req)
        print reqID
        stdin.write('''
        cd /root/MDB2GRANITE/
        python pravinGranite.py %d
        ls
        exit
        ''')%reqID
        print stdout.read()

        stdout.close()
        stdin.close()
        client.close()


if __name__== "__main__":
        req = sys.argv[1]
        mdbAuto(req)

上面的代码给出了错误作为不支持的操作数类型.如何为stdin.write函数提供变量值.我猜stdin.write函数将该行写为命令行.有没有办法可以操纵%d使其接受reqID的值？提前致谢.