Question

这个问题是关于如何找到特定文本的行号，例如“这是我的马”？

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:
 ?????

Answer 1

使用enumerate函数，因为它适用于任何可迭代的文件（您的文件是）。

for line_number, line in enumerate(infile):
  print line_number, line

Answer 2

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。

注意，您需要在行上应用strip()才能在最后删除新行字符。

Answer 3

您可以这样做：

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：

如何查找特定文本所在的行号？

3 个答案: