从文本文件中删除一行 [英] Deleting a line from a text file

问题描述

如何使用readlines()

喜欢:

f_open = open("textfile.txt", "r")
lines = f_open.readlines()

如何使用lines在textfile.txt中选择一行并将其删除?

How do you use lines to choose a line in textfile.txt and delete it?

对不起，如果这没有道理.

Sorry if it doesn't make sense.

推荐答案

使用fileinput模块的就地功能.请在fileinput上参考可选的就地过滤部分.下面的示例从文件中删除第一行:

Use the fileinput module's inplace functionality. Refer Optional in-place filtering section at fileinput. The example below deletes the first line from a file:

import fileinput
import sys

for line_number, line in enumerate(fileinput.input('myFile', inplace=1)):
  if line_number == 0:
    continue
  else:
    sys.stdout.write(line)

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