"\ n"在字符串不起作用 [英] "\n" in strings not working

问题描述

对于我的操作系统，我有这小段代码:

I have this little piece of code for my sort of Operating System:

print("Type your document below.")
print("Press enter to save.")
print("Type \\n for a new line.")
file=input()
print("Enter a file name...")
filename=input()
outFile = open(filename, "w+")
outFile.write(file)
outFile.close()

但是当我运行这段代码(在def中)时，说我输入了这样的内容:

but when I run this code (which is in a def), say I enter something like this:

foo \n bar

由于在接收用户输入时输入不起作用，因此您必须使用\ n.

because enters dont work when recieving input from the users, so you have to use \n.

文件显示为:

foo \n bar

代替:

foo
bar

推荐答案

正如Martijn所说，您需要自己处理替换项.最简单的方法是使用.replace方法:

As Martijn explained you'll need to process the replacements yourself. The easiest way to do that is literally with the .replace method:

>>> print(input('Enter \\n for newline: ').replace('\\n', '\n'))
Enter \n for newline: This is my \nnewline
This is my 
newline

这对于\n转义序列可以很好地工作，但是如果您想要其他人(例如\t)，则需要自己实现.

This will work fine for the \n escape sequence, but if you want others (e.g. \t) then you'll need to implement that yourself.

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