diff — Text Diffing

Compare two strings and produce diff output.

Import

import diff

API Reference

Function	Description
diff.unified(old, new) -> str	Unified diff output
diff.lines(old, new) -> str	Line-by-line diff markers
diff.equal(a, b) -> bool	Check if two strings are equal
diff.count_changes(old, new) -> int	Number of changed lines

Examples

Unified Diff

import diff

def main() -> int:
    let old = "line1\nline2\nline3"
    let new = "line1\nmodified\nline3"

    let result = diff.unified(old, new)
    print(result)
    # --- old
    # +++ new
    # -line2
    # +modified
    0

Count Changes

import diff

def main() -> int:
    let a = "hello\nworld"
    let b = "hello\nearth"

    print(diff.count_changes(a, b))  # 1
    print(diff.equal(a, b))          # false
    print(diff.equal(a, a))          # true
    0