使用Python从一个文本文件一行一行地复制到另一个文本文件

Question

我是Python新手，还是一般编程人员，我正在尝试从文本文件（包含字幕）创建srt文件

这是我的代码：

  with open("in3.txt") as f:
    lines = f.readlines()
   # lines = [l for l in lines]
    with open("out.txt", "w") as f1:
        for x in range(0, 7):
            y = x*10
            f1.write("\n00:01:"+str(y)+"\n")
            f1.writelines(lines) 

这就是我得到的：

00:01:0 This is 1st line This is 2nd line This is 3rd line This is 4th line This is 5th line 00:01:10 This is 1st line This is 2nd line This is 3rd line This is 4th line This is 5th line 00:01:20 This is 1st line This is 2nd line This is 3rd line This is 4th line This is 5th line ...但是，所需的结果是： 00:01:0 This is 1st line 00:01:10 This is 2nd line 00:01:20 This is 3rd line 00:01:30 This is 4th line

in3.txt包含：

This is 1st line
This is 2nd line
This is 3rd line
This is 4th line
This is 5th line

任何帮助将不胜感激:)谢谢

Answer 1

这是使用enumerate解决方案：

with open("in3.txt") as f:
    lines = f.readlines()
    with open("out.txt", "w") as f1:
        for x, line in enumerate(lines): # Changed to enumerate as per recommendation
            y = x*10
            f1.write("\n00:01:"+str(y)+"\n")
            f1.write(line)

将产生以下输出：

00:01:0
This is 1st line

00:01:10
This is 2nd line

00:01:20
This is 3rd line

00:01:30
This is 4th line

00:01:40
This is 5th line

图片添加了说明：

Answer 2

您可以使用以下lines的索引：

with open("in3.txt") as f:
    lines = f.readlines()
    with open("out.txt", "w") as f1:
        for x in range(0, 7):
            y = x*10
            f1.write("\n00:01:"+str(y)+"\n")
            f1.write(lines[x]) # Changed f1.writelines(lines) to f1.write(lines[x]))

Answer 3

您的f1.writelines（lines）正在循环内发生。 因此，每次循环时，您都在写整lines 。

如果不知道in3.txt的内容，则很难调试。