larzdiff
Human-readable diffs of two values — see exactly what changed.
When a test fails or two things should match but don't, you need to see the difference at a glance, not squint at two big blobs. larzdiff compares two values — strings, lists, dicts, or scalars — and describes exactly what changed: which keys, which lines, which items. Perfect for test failure messages and debugging. Zero third-party dependencies.
Install
pip install larzdiff
Use
from larzdiff import diff
print(diff({"a": 1, "b": 2}, {"a": 1, "b": 3})) # ~ 'b': 2 -> 3
print(diff([1, 2, 3], [1, 9, 3])) # ~ [1] 2 -> 9
print(diff("line one\nline two", "line one\nline 2"))
Learn to code with Larz
Part of the learn-to-code toolkit in the Larz stack — see the Learn to Code platform. Pairs with larztest.
Tests
python -m unittest discover -s tests -v # 7 tests
License
MIT (c) larz-scripter
1 maintainer
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