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pythonpython-3.xfilepath
chenzhongpu
chenzhongpu

Reputation: 6871

Python3: File path problems

Suppose my Python3 project structure is :

Project
 | App.py
 | AFolder
 |   | tool.py
 |   | token.json

In tool.py, I use os.path.exists('token.json') to check whether the Json file exits. As expected, it returns true.

def check():
   return os.path.exists('token.json')

However, when I call this in App.py, it returns false.

It seems file path is different when calling functions between modules. How to solve it ?

Upvotes: 1

Views: 825

Answers (1)

abcd
abcd

Reputation: 10791

It doesn't matter where the file in which you've written os.path.exists( . . . is. What matters is where you are when you import and call the function.

So, use the full path when you check whether the file exists.

def check():
   directory_to_file = '/home/place/where/i/store/files/'
   return os.path.exists(os.path.join(directory_to_file, 'token.json'))
   # Making the check relative to current path will be more portable:
   # return os.path.exists(os.path.join(os.path.dirname(__file__)),'token.json')

This will allow the check function to work anywhere!

Upvotes: 2

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