运行cp命令以在Python中复制文件或更改文件名 [英] run cp command to make a copy of a file or change a file name in Python

问题描述

在python 2.7.2中，我需要在Linux中制作文件的副本.

In python 2.7.2, i need to make a copy of a file in Linux.

newfile ="namePart1" +字典[key] +"namePart2"

newfile = "namePart1" + dictionary[key] + "namePart2"

os.system("cp cfn5e10_1.lp newfile")

os.system("cp cfn5e10_1.lp newfile")

但是，新文件不能用其正确的字符串替换.

But, the newfile cannot be replaced by its correct string.

论坛中的帖子无济于事.

the posts in the forum cannot help.

我们非常感谢您的帮助.

Any help is really appreciated.

推荐答案

使用 shutil.copyfile 复制文件而不是 os.sytem ，它不需要创建新进程，它将自动处理文件名中带有不寻常字符的文件名他们，例如空格- os.system 只是将命令传递给shell，shell可能会破坏其中包含空格的文件名以及其他可能的问题.

Use shutil.copyfile to copy a file instead of os.sytem, it doesn't need to create a new process and it will automatically handle filenames with unusual characters in them, e.g. spaces -- os.system just passes the command to the shell, and the shell might break up filenames that have spaces in them, among other possible issues.

例如:

newfile = "namePart1" + dictionary[key] + "namePart2"
shutil.copyfile("cfn5e10_1.lp", newfile)

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