JSON Diff

Compare two JSON files and show the differences in a clear format.

Features

• Compare JSON files of any complexity
• Detect nested object differences
• Identify array length changes
• Show old vs new values for changed fields
• Pure Python, no external dependencies

Input

Two JSON files passed as arguments.

Output

List of all differences found, with paths and old/new values.

Usage

python3 scripts/json_diff.py --file1 data1.json --file2 data2.json

Example

Input file1.json:

{"name": "Alice", "age": 30, "city": "Beijing"}

Input file2.json:

{"name": "Alice", "age": 31, "city": "Shanghai"}

Output:

differences:
- age: 30 -> 31
- city: Beijing -> Shanghai
count: 2

Exit Codes

• 0: Comparison completed (with or without differences)
• 1: File read error