如果存在则删除文件;蟒蛇 [英] deleting file if it exists; python
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问题描述
尝试:
with open(os.path.expanduser('〜')+ '\Desktop\input.txt'):
os.remove(os.path.expanduser('〜')+'\Desktop\input.txt')
f1 = open(除了IOError:
f1 = open(os.path.expanduser('〜')+'\Desktop\input.txt','a')
)+'\Desktop\input.txt','a')
解决方案
您正尝试删除一个打开的文件,以及 os.remove()
状态...
在Windows上,尝试删除正在使用的文件会导致引发异常
您可以将代码更改为...
$ b $
filename = os.path.expanduser('〜')+'\Desktop\input.txt'
try:
os.remove(filena我)
除了OSError:
传递
f1 = open(文件名,'a')
...或者你可以用...替换所有的...
$ $ p $ f1 = open(os。 path.expanduser('〜')+'\Desktop\input.txt','w')
...在打开之前将文件截断为零。
I want to create a file; if it already exists I want to delete it and create it anew. I tried doing it like this but it throws a Win32 error. What am I doing wrong?
try:
with open(os.path.expanduser('~') + '\Desktop\input.txt'):
os.remove(os.path.expanduser('~') + '\Desktop\input.txt')
f1 = open(os.path.expanduser('~') + '\Desktop\input.txt', 'a')
except IOError:
f1 = open(os.path.expanduser('~') + '\Desktop\input.txt', 'a')
解决方案
You're trying to delete an open file, and the docs for os.remove()
state...
On Windows, attempting to remove a file that is in use causes an exception to be raised
You could change the code to...
filename = os.path.expanduser('~') + '\Desktop\input.txt'
try:
os.remove(filename)
except OSError:
pass
f1 = open(filename, 'a')
...or you can replace all that with...
f1 = open(os.path.expanduser('~') + '\Desktop\input.txt', 'w')
...which will truncate the file to zero length before opening.
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