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Pythonic way to check if a file exists?
How to check if a file exists in python?
Scripting in Windows
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@vpit3833: I would say "more than possibly". ;-)GaretJax– GaretJax2011-08-02 06:25:05 +00:00Commented Aug 2, 2011 at 6:25
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Note that selected answer is incorrect - question is about file, selected asnwer will respond "yes" also for directoriesreducing activity– reducing activity2021-06-08 06:39:22 +00:00Commented Jun 8, 2021 at 6:39
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3 Answers
This is very easy using the os module.
from os.path import exists
print exists("C:\somefile.txt")
5 Comments
bgura
What if the file is in an 'extended' path? Eg "\\?\C:\<very long path>"
Benj
@bgura why would it make a difference?
bgura
@Benj. I actually ran into issue with long paths on windows a while back and python kept saying the path does not exist. On Windows, you need to use a special syntax to access "long" paths See this: stackoverflow.com/a/21194605/1161132. I cannot recall offhand if python supports the syntax or if it will normalize long path's via the conventional format (i.e. C:\path\...)
Benj
@bgura That's interesting! I'm afraid I cannot answer your question though...
reducing activity
This is an incorrect answer - question is about file, this will answer yes also for directories
Check the manual, this is a really easy question:
http://docs.python.org/library/os.path.html#os.path.exists
os.path.exists(path)Return True if path refers to an existing path. Returns False for broken symbolic links. On some platforms, this function may return False if permission is not granted to execute os.stat() on the requested file, even if the path physically exists.
1 Comment
reducing activity
This is an incorrect answer - question is about file, this will answer yes also for directories
http://docs.python.org/library/os.path.html#os.path.exists
or if you want to also ensure that said path is actually a file (as opposed to a directory, link, etc):
1 Comment
Benj
Could you please summarise those links?
