Question

下面是我的代码，我的while循环调用我的函数（function_called）来处理日志文件。当我的函数处理每一行时出现异常时，它应该忽略其余代码并将控制权转回while循环以转到下一行。

所以它应该是：

- 获取线 - - 如果行中的索引错误异常 - - 代码 - - 移到下一行

我的代码概述如下所述

def function_called():
                try:
                     --Something is happening here--
                except IndexError:
                --If there is an exception then code needs to be ignored
                and it should be transfered to the while loop to go to the next line--



f = open('/data/qantasflight/run/tomcat/logs/localhost_access_log.2016-03-31.txt', 'r')
while True:
        line = ''
        while len(line) == 0 or line[-1] != '\n':
                tail = f.readline()
                if tail == '':
                        continue
                line = tail

        print (line, end='')
#               print (line)
        sleep(0.1)
        function_called(line)

Answer 1

您应该在要处理它的地方捕获异常，即在while循环中。

def function_called():
    """ something, which might raise an index error """

while True:
    """ do stuff """
    try:
        function_called(line)
    except IndexError:
        continue

如果您想在function_called中进行更明确的错误处理，则可以执行此操作并再次raise例外：

def function_called():
    try:
        """ something, which might raise an index error """
    except IndexError:
        """ more error handling """
        raise

查看chapter about error handling in the official documentation。

引发异常，忽略代码并将控件转移到while循环

1 个答案: