How to Resolve \'PermissionError: [Errno 13] Permission denied\' When Opening a File?

Permission Denial: Resolving 'Errno 13' in Attempting to Open a File

When encountering the error message "PermissionError: [Errno 13] Permission denied," it indicates that an attempt to open a file has been unsuccessful due to permission issues. This can occur when trying to create, write to, or read a file from a location where the user does not have the necessary permissions.

To rectify this error, ensure that the path provided corresponds to a file, not a folder. This oversight can commonly lead to the denial of permission. To safeguard against this issue, employ the following approach:

import os

path = r"my/path/to/file.txt"
assert os.path.isfile(path)
with open(path, "r") as f:
    pass

This assertion will trigger a failure if the specified path indeed corresponds to a folder. By confirming the existence of a file through this mechanism, you can prevent permission errors and maintain the integrity of your program's file operations.

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