如何使用 Python 清空文件
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How to empty a file using Python
提问by Adergaard
In the Unix shell I can do this to empty a file:
在 Unix shell 中，我可以这样做来清空文件：
cd /the/file/directory/
:> thefile.ext
How would I go about doing this in Python?
我将如何在 Python 中执行此操作？
Is os.systemthe way here, I wouldn't know how since I would have to send 2 actions after each other i.e. the cdand then the :>.
是os.system这里的方式，我不知道如何，因为我必须cd依次发送 2 个动作，即:>.
采纳答案by rumpel
Opening a file creates it and (unless append ('a') is set) overwrites it with emptyness, such as this:
打开一个文件会创建它并且（除非设置了 append ('a') ）用空值覆盖它，例如：
open(filename, 'w').close()
回答by jamylak
Alternate form of the answer by @rumpel
@rumpel 答案的另一种形式
with open(filename, 'w'): pass
