为什么我的for循环无法捕获"success"？

Question

我正在尝试扫描日志文件并匹配某些字符串（运算符）。匹配运算符后，我想寻找另一个字符串，该字符串将在日志文件中指定 "success" 任务。我的循环只在第一个 elif 之前工作。变量 operator_type 定义正确。我通过打印 operator_type 来测试它。我不完全理解使用 "break" 所以这些可能是问题所在。代码一直跳到 else（根据我的输出）。

fl_sts == 'FAILED' 我的代码能够发现故障。它无法找到成功。

    for i, line in enumerate(lines):
        if (fl_sts in line):
            end_line = lines[i]
            success_status = fl_sts
            break
        elif operator_type == op_py in line:
            for line in lines:
                if (sc_crt_py in line):
                    end_line = lines[-1]
                    success_status = sc_sts
                else:
                    break
        elif operator_type == op_eml in line:
            for line in lines:
                if (sc_crt_eml in line):
                    end_line = lines[-1]
                    success_status = sc_sts
                else:
                    break
        elif operator_type == op_s3 in line:
            for line in lines:
                if (sc_crt_s3 in line):
                    end_line = lines[-1]
                    success_status = sc_sts
                else:
                    break
        elif operator_type == op_bsh in line:
            for line in lines:
                if (sc_crt_bsh in line):
                    end_line = lines[-1]
                    success_status = sc_sts
                else:
                    break
        elif operator_type == op_snw in line:
            for line in lines:
                if (sc_crt_snw in line):
                    end_line = lines[-1]
                    success_status = sc_sts
                else:
                    break
        elif operator_type == op_snw_sns in line:
            for line in lines:
                if (sc_crt_snw_sns in line):
                    end_line = lines[-1]
                    success_status = sc_sts
                else:
                    break
        else:
            success_status = sc_sts_rn
            end_line = 'None'

例如，如果 operator_type 是 (PythonOperator)，则 sc_crt_py 是 'Done. Returned value was: None'。

示例行[2019-07-08 15:06:44,415] {python_operator.py:104} INFO - Done. Returned value was: None。

请注意 (PythonOperator) 在此循环上方成功捕获，{python_operator} 是线路上的噪音。

我期望 Successful 的输出为 sc_sts = 'Succesful'

我很欣赏见解。我还在学习中。

Answer 1

删除中断，您将在第一个 If

之后退出循环

Answer 2

你不理解的情绪break似乎是正确的。 break 中断最内层的封闭 for 或 while 循环。它用于提前停止循环的执行。我会通读有关流量控制的文档：https://docs.python.org/3/tutorial/controlflow.html

Answer 3

with open(path, "r") as f:
     started = None
     for line in f.readlines():
         line.strip()
         if started is None:
            if operator in line:
               #Do something here
         else:
            if "success" in line:
               #Do something here
               started = None
            else:
               pass

Answer 4

这对我有用。删除中断并更改 elif 语句。

for i, line in enumerate(lines):
        if (fl_sts in line):
            end_line = lines[i]
            success_status = fl_sts
            break
        elif operator_type == op_py:
            for line in lines:
                if (sc_crt_py in line):
                    end_line = lines[-1]
                    success_status = sc_sts
        elif operator_type == op_eml:
            for line in lines:
                if (sc_crt_eml in line):
                    end_line = lines[-1]
                    success_status = sc_sts
        elif operator_type == op_s3:
            for line in lines:
                if (sc_crt_s3 in line):
                    end_line = lines[-1]
                    success_status = sc_sts
        elif operator_type == op_bsh:
            for line in lines:
                if (sc_crt_bsh in line):
                    end_line = lines[-1]
                    success_status = sc_sts
        elif operator_type == op_snw:
            for line in lines:
                if (sc_crt_snw in line):
                    end_line = lines[-1]
                    success_status = sc_sts
        elif operator_type == op_snw_sns:
            for line in lines:
                if (sc_crt_snw_sns in line):
                    end_line = lines[-1]
                    success_status = sc_sts
        else:
            success_status = sc_sts_rn
            end_line = 'None'

为什么我的for循环无法捕获"success"？

Why is my for loop unable to capture "success"?

python

for-loop

nested-loops

control-flow