如何在Python中使用开放函数创建文件? [英] How to create file with open function in Python?

问题描述

在Linux环境中，我想创建一个文件并将文本写入其中:

In Linux environment, I want to create a file and write text into it:

HTMLFILE: "$MYUSER/OUTPUT/myfolder/mytext.html"
f = open(HTMLFILE, 'w')

IOError: [Errno 2] No such file or directory: "$MYUSER/OUTPUT/myfolder/mytext.html"

我对"$ MYUSER/OUTPUT/myfolder/"目录具有读/写权限.

I have read/write permission do "$MYUSER/OUTPUT/myfolder/" directories.

为什么会出现此错误?为什么不创建mytext.html文件?

Why do I get this error? Why doesn't it create mytext.html file?

推荐答案

os.path.expandvars()可以帮助:

f = open(os.path.expandvars(HTMLFILE), 'w')

open仅处理实际的文件名. expandvars可以在字符串中扩展环境变量.

open only deals with actual file names. expandvars can expand environment variables in strings.

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