HypothesisWorks/hypothesis

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The property-based testing library for Python

Stars: 9k
Forks: 675
Open beginner issues: 0
Indexed issues: 31
Avg merge: 4d 5h
Merged PRs (30d): 8

Dominant language: Python
License: No license data
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

31 open issues indexed

Skill to migrate from pytest Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4865 · Opened Aug 17, 2026
Improve django timezone library for modern standards Open

interop

Difficulty 5/5 Over a week Newbie friendliness 20/100

HypothesisWorks/hypothesis#4849 · Opened Aug 12, 2026
Develop a strategy for symbolic backend support alongside rust-based hypothesis logic Open

internals interop

Difficulty 5/5 Over a week Newbie friendliness 30/100

HypothesisWorks/hypothesis#4823 · 1 reaction · Opened Jul 26, 2026
Migrate the Hypothesis engine from Python to Rust Open

internals

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4740 · 8 comments · 8 reactions · Opened May 25, 2026
Consider improvements from Python 3.15 Open

internals

Difficulty 5/5 Over a week Newbie friendliness 42/100

HypothesisWorks/hypothesis#4736 · 2 comments · Opened May 21, 2026
Impersonating functions can affect tracebacks in unintended ways Open

legibility

Difficulty 5/5 Over a week Newbie friendliness 35/100

HypothesisWorks/hypothesis#4681 · 5 comments · Opened Mar 24, 2026
Support PEP 794 Open

enhancement tests/build/CI

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

HypothesisWorks/hypothesis#4572 · 4 comments · 1 reaction · Opened Oct 24, 2025
Ideas for more blog posts Open

enhancement website

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4495 · Opened Aug 3, 2025
Improve our dependency pinning Open

tests/build/CI

Difficulty 4/5 3-5 days Newbie friendliness 42/100

HypothesisWorks/hypothesis#4494 · 1 reaction · Opened Aug 2, 2025
`sets()` has potentially high redraw count from underlying strategies Open

performance

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4458 · 3 comments · Opened Jun 30, 2025
New option to include choice sequence and spans in observability output Open

enhancement interop

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4387 · 2 comments · Opened May 10, 2025
Ship a linter for performance and idiom issues? Open

interop legibility new-feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4318 · 1 reaction · Opened Mar 23, 2025
Documentation overhaul Open

docs meta

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4309 · 3 comments · 5 reactions · Opened Mar 18, 2025
Disable pytest assertion-rewrites inside Hypothesis, using magic module docstrings Open

interop

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#4267 · 2 comments · Opened Feb 12, 2025
Document `DataObject.draw` and rename other members with leading underscore Open

docs legibility

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#4170 · 3 comments · 1 reaction · Opened Nov 11, 2024
Rename some internals for clarity Open

internals legibility

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4166 · 2 comments · Opened Nov 10, 2024
User exceptions are ignored if data is frozen Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

HypothesisWorks/hypothesis#4132 · Opened Oct 8, 2024
Support `async` methods in stateful testing Open

interop new-feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#4107 · 8 reactions · Opened Sep 18, 2024
Add a new `dialect=` argument to `st.from_regex()` Open

enhancement interop

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#4089 · Opened Aug 22, 2024
Generating non-IEEE `floats` - such as `bfloat16`, `bfloat32`, or various `float8_*` types Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#3959 · 3 comments · Opened Apr 27, 2024
Use `trace_branch` monitoring for Scrutineer Open

enhancement internals performance

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#3781 · 1 comment · Opened Nov 4, 2023
Enable GitHub merge queues Open

tests/build/CI

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#3577 · 1 comment · 1 reaction · Opened Feb 9, 2023
Reporting improvements for Scrutineer Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 68/100

HypothesisWorks/hypothesis#3551 · 3 comments · Opened Jan 19, 2023
Add a strategy for new Numpy PRNGs Open

enhancement

HypothesisWorks/hypothesis#3131 · 10 comments · 1 assignee · Opened Nov 2, 2021
Expand our use of swarm testing Open

new-feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

HypothesisWorks/hypothesis#2643 · 1 comment · 2 reactions · Opened Oct 17, 2020
Add option to insert whitespace between tokens in lark strategy Open

enhancement lark

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#2437 · 11 comments · 1 reaction · Opened May 18, 2020
Improve structure of `timezones()` strategies Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

HypothesisWorks/hypothesis#2414 · 3 comments · Opened Apr 27, 2020
Support `lark.indenter.Indenter` in `from_lark` Open

lark

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#1807 · 2 comments · Opened Feb 10, 2019
Full support for all grammars in Lark examples Open

lark

Difficulty 4/5 3-5 days Newbie friendliness 35/100

HypothesisWorks/hypothesis#1804 · 12 comments · 2 reactions · Opened Feb 10, 2019
Better process isolation Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

HypothesisWorks/hypothesis#165 · 4 comments · Opened Sep 25, 2015
When using class based tests, setUp is not called for each hypothesis test Open

docs interop

Difficulty 3/5 1-2 days Newbie friendliness 42/100

HypothesisWorks/hypothesis#59 · 13 comments · 1 reaction · Opened Apr 16, 2015

HypothesisWorks/hypothesis

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