在Python 2.4中，如何在';'之后去除字符? [英] In Python 2.4, how can I strip out characters after ';'?

问题描述

假设我正在解析一个文件，该文件使用;作为注释字符.我不想解析评论.因此，如果我一行看起来像这样:

Let's say I'm parsing a file, which uses ; as the comment character. I don't want to parse comments. So if I a line looks like this:

example.com.              600     IN      MX      8 s1b9.example.net ; hello!

是否有一种更容易/更优雅的方法来除掉字符，

Is there an easier/more-elegant way to strip chars out other than this:

rtr = ''
for line in file:
    trig = False
    for char in line:
        if not trig and char != ';':
            rtr += char
        else:
            trig = True
    if rtr[max(rtr)] != '\n':
        rtr += '\n'

推荐答案

我建议您说

line.split(";")[0]

，它将为您提供所有字符的字符串，直到但不包括第一个;"特点.如果不 ";"字符存在，那么它将给您整行.

which will give you a string of all characters up to but not including the first ";" character. If no ";" character is present, then it will give you the entire line.

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