| Name | hasse JSON |
| Version |
0.2.0
JSON |
| download |
| home_page | None |
| Summary | Python library for representing Partially Ordered sets via Hasse Diagrams. |
| upload_time | 2025-09-08 03:39:00 |
| maintainer | None |
| docs_url | None |
| author | Marcell Vazquez-Chanlatte |
| requires_python | <4.0,>=3.9 |
| license | MIT |
| keywords |
|
| VCS |
|
| bugtrack_url |
|
| requirements |
No requirements were recorded.
|
| Travis-CI |
No Travis.
|
| coveralls test coverage |
No coveralls.
|
# hasse
Python library for representing Partially Ordered sets via Hasse Diagrams.
[](https://cloud.drone.io/mvcisback/hasse)
[](https://badge.fury.io/py/hasse)
[](https://opensource.org/licenses/MIT)
**Table of Contents**
- [Installation](#installation)
- [Usage](#usage)
# Installation
If you just need to use `hasse`, you can just run:
`$ pip install hasse`
For developers, note that this project uses the
[poetry](https://poetry.eustace.io/) python package/dependency
management tool. Please familarize yourself with it and then
run:
`$ poetry install`
# Usage
`hasse` is centered around the `hasse.PoSet` class. An example is
given below.
```python
import hasse
poset = hasse.PoSet.from_chains(
[1, 2, 4], # 1 < 2 < 4
[1, 3, 4], # 1 < 3 < 4
)
# Test membership and size.
assert 2 in poset
assert len(poset) == 4
assert set(poset) == {1,2,3,4}
# Perform pair wise comparison.
assert poset.compare(1, 1) == '='
assert poset.compare(1, 4) == '<'
assert poset.compare(4, 2) == '>'
assert poset.compare(2, 3) == '||'
# Add an edge.
poset2 = poset.add([2, 1])
poset2.compare(1, 2) == '='
```
PoSet must be a DAG. For large posets we encourage batching via from_chains over many small add() calls.
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