Question

我有rootFile = root.json个文件，内容是

{
  "tests":[
    {
      "test":"test1",
      "url":"url1"
    },
    {
      "test":"test2",
      "url":"url2"
    },
    {
      "test":"test3",
      "url":"url3"
    }
  ]
}

我有python函数，要给我运行字符串参数

def check(params):
    runId=time.strftime("%Y%m%d-%H%M%S")
        outputFile=Path(""+runId+".txt")
    with open (rootFile) as rj:
        data=json.load(rj)
    for param in params:
        for t in data['tests']:
            if t['test'] == param:
                urlToUse=t['url']
                testrun(param, urlToUse, runId)
            else:
                nonExistingTest="Test "+param+" Doesn't exist \n"
                if not outputFile.exists():
                    with open(outputFile,"a") as noSuchTest:
                        noSuchTest.write("Test "+param+" Doesn't exist \n")
                elif not nonExistingTest in open(outputFile).read():
                    with open(outputFile,"a") as noSuchTest:
                        noSuchTest.write("Test "+param+" Doesn't exist \n")
    with open(outputFile,"r") as pf:
        message=pf.read()
        slackResponse(message)

当我的参数是存在于root.json文件中的“ test1 test2 test3”时，我会得到这样的响应

Test test1 passed #this response comes from testrun() function
Test test1 Doesn't exist

Test test2 Doesn't exist
Test test2 passed  #this response comes from testrun() function

Test test3 Doesn't exist
Test test3 passed  #this response comes from testrun() function

但是当我给出不存在的参数时，输出是正确的。例如

Test test4 Doesn't exist
Test test5 Doesn't exist
Test test6 Doesn't exist
Test test7 Doesn't exist

不知道为什么发送时实际上不存在

Answer 1

您正在将通过函数调用传递的每个参数与从json文件加载的tests数组的每个项目进行比较，开始进行等效性的相应测试，并回显一条消息，指出该测试不存在。由于此比较每个参数只会产生一次阳性结果，但是会被检查多达root.json中针对每个参数指定的测试次数，因此输出中将有很多行指示特定参数与root.json中指定的特定测试不匹配。

一旦找到当前参数正在处理的root.json条目，您将需要某种方法来退出循环。我建议将tests中分配给root.json的{{1}}的数据结构从数组更改为对象，将测试名称作为键并将其url作为值，或者以某种方式过滤可能的测试列表您将当前参数与之比较。

考虑将for param in params:中的所有内容更改为以下内容：

matching_tests = [t for t in data['tests'] if t['test'] == param]
if len(matching_tests) > 0:
    for t in matching_tests:
        urlToUse=t['url']
        testrun(param, urlToUse, runId)
else:
    nonExistingTest="Test "+param+" Doesn't exist \n"
    [...]

这样，表示没有测试匹配给定参数的消息将最多仅回显一次。

python函数代码中的输出错误

1 个答案: