Question 136295 in Visual Studio Code Question posted in
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Visual Studio Code – Showing FileNotFound Error when trying to open file from another directory in python

parentDirectory
    subdr1
        -testfile.txt
    subdr2
        childdir
           -file.json
           -file2.pickle
        -fileOpener.py

I would like to read the file.json from fileOpener.py in Python using:

with open("./childdir/file.json", 'r') as f:

But I’m getting FileNotFoundError.

FileNotFoundError: [Errno 2] No such file or directory: './childdir/file.json'

Would anyone mind solving this issue? I’m using WINDOWS operating system.

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3

Answers


  1. 0

    First of all which OS are you using ? since windows uses and UNIX based OSes use /

    Bast approach would be to use path from os module like this:

    import os

with open(os.path.join('childdir', 'file.json'), 'r')" as f:
    # YOUR CODE

    This is a better approach because it is platform independent since it creates the path appropriately based on the OS you are on.

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  2. 0

    This is because the file you want to open is in the subdirectory of your current working directory(where the python file is present).
    You need to consider 2 things here,

    1. Depends on the OS which you’re using, it’s either ‘/’ for UNIX-based &
      ” for Windows-based as separator in the file’s path

    2. we can either use the absolute path of the file and mode to open the file
      or with the path sub-module of that os module.

    # With absolute path in Windows 
 with open('F:parentDirectorysubdr2childdirfile.json', mode(r/a/w..)) as fl:
         # logic

    or

    # with os.path submodule
  import os

  with open(os.path.join('childdir', 'file.json'), mode('r/w/a/..')) as fl:
        # logic
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  3. 0

    If you run fileOpener.py within the subdir2 then all is well. The problem happens when you are not in subdir2. Here is the solution:

    import pathlib

this_script = pathlib.Path(__file__)
json_path = this_script.parent / "childdir" / "file.json"
with open(json_path, 'r') as f:
    ...

    Since pathlib is cross-platform, this code should work under Windows. I tested it under Mac and linux.

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