Here’s how you can handle the warnings related to escape sequences in file paths and ensure correct file validation.

Updated verify_hashes.py

The warning you are encountering is due to the use of unicode_escape for handling path strings with escape sequences. To avoid these warnings and handle paths correctly, you can update your code as follows:

import hashlib
import os

def calculate_file_hash(file_path):
    """Calculate the SHA-256 hash of a file."""
    hasher = hashlib.sha256()
    with open(file_path, 'rb') as f:
        while chunk := f.read(8192):
            hasher.update(chunk)
    return hasher.hexdigest()

def verify_files(expected_hashes):
    """Verify the hash values of files."""
    missing_files = []
    mismatched_files = []

    for file_path, expected_hash in expected_hashes.items():
        # Handle escape characters in paths
        file_path = file_path.replace('\\', os.path.sep)

        if not os.path.isfile(file_path):
            missing_files.append(file_path)
            continue

        actual_hash = calculate_file_hash(file_path)
        if actual_hash != expected_hash:
            mismatched_files.append((file_path, expected_hash, actual_hash))

    if missing_files or mismatched_files:
        return False
    return True

if __name__ == "__main__":
    from hashes import expected_hashes

    verify_result = verify_files(expected_hashes)
    if not verify_result:
        print('Error: Verification of some files was unsuccessful.')
        exit(1)

Explanation

1. Handle Path Strings:

• Use file_path.replace('\\', os.path.sep) to replace backslashes (\) with the system’s path separator (os.path.sep). This handles paths correctly on both Windows and Unix-like systems without raising warnings.

1. Avoid Escape Sequence Warnings:

• Instead of decoding with unicode_escape, which may trigger warnings, this method ensures the path is correctly formatted for your operating system.

1. In __main__ Block:

• Import expected_hashes and perform the verification. If the verification fails, print an error message and exit with a non-zero status code to indicate failure.

This approach will prevent the deprecation warnings related to escape sequences and ensure that your path handling is both platform-independent and reliable. If you need any further assistance or have additional questions, feel free to ask!