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import difflib

def compare_files(file1, file2, output_file):
    # Read the contents of both files
    with open(file1, 'r') as f1, open(file2, 'r') as f2:
        file1_lines = f1.readlines()
        file2_lines = f2.readlines()

    # Create a Differ object and compare the two files
    differ = difflib.Differ()
    diff = list(differ.compare(file1_lines, file2_lines))

    # Store changes in file2 not present in file1
    changes = []
    for line in diff:
        if line.startswith('+ '):  # Lines added in file2
            changes.append(line[2:])  # Remove the '+ ' prefix

    # Print changes to console
    print("Changes in file2 not present in file1:")
    for change in changes:
        print(change, end='')

    # Write changes to output file
    with open(output_file, 'w') as out_file:
        out_file.write("Changes in file2 not present in file1:\n")
        out_file.writelines(changes)

# Replace 'file1.py', 'file2.py', and 'output.txt' with actual file paths
compare_files('file1.py', 'file2.py', 'output.txt')