1

这个问题是关于如何找到特定文本(例如“这是我的马”)存在的行号?

文本文件:

this is my name
this is my address
this is my age
this is my horse
this is my book
this is my pc

我的代码:

with open ('test.txt', 'r') as infile:
 ?????
4

3 回答 3

2

使用enumerate函数,因为它适用于可迭代的任何内容(您的文件是)。

for line_number, line in enumerate(infile):
  print line_number, line
于 2013-08-29T09:57:55.207 回答
1
s = "this is my horse"
with open ('test.txt', 'r') as infile:
    print next(index for index, line in enumerate(infile, start=1) if line.strip() == s)

打印4

请注意,您需要在行上应用strip()才能在最后摆脱换行符。

于 2013-08-29T09:57:57.070 回答
1

你可以这样做:

with open ('test.txt', 'r') as infile:
    data = infile.readlines()
    for line, content in enumerate(data, start=1):
            if content.strip() == 'this is my horse':
                print line

如果您的文件将打印:

4
于 2013-08-29T10:00:43.483 回答