PolicyEngine/policyengine-core

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Core microsimulation engine for PolicyEngine models. Forked from OpenFisca-Core.

Stars: 22
Forks: 30
Open beginner issues: 0
Indexed issues: 91
Avg merge: 14h 33m
Merged PRs (30d): 7

Dominant language: Python
License: AGPL-3.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

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91 open issues indexed

Designate variables that should not be multiplies or divided based on the period Open

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

PolicyEngine/policyengine-core#257 · Opened Aug 27, 2024
Tests fail if uprating is applies to a `.inf` parameter value Open

Difficulty 4/5 3-5 days Newbie friendliness 15/100

PolicyEngine/policyengine-core#254 · Opened Aug 19, 2024
Fix formatting for version 2.23.1 changelog entry Open

Difficulty 1/5 Under an hour Newbie friendliness 35/100

PolicyEngine/policyengine-core#249 · Opened Aug 19, 2024
Fix newly added enum.py statement to eliminate FutureWarning of deprecation Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

PolicyEngine/policyengine-core#238 · 2 comments · Opened Aug 7, 2024
Add global variables Open

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

PolicyEngine/policyengine-core#233 · Opened Aug 2, 2024
Add inclusive / exclusive metadata tag to scale parameters Open

PolicyEngine/policyengine-core#221 · 1 comment · 1 assignee · Opened Jul 10, 2024
display_fig error in docs Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

PolicyEngine/policyengine-core#220 · Opened Jul 5, 2024
Type of parameter should be asserted if thresholds/rates/amounts are present Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

PolicyEngine/policyengine-core#217 · Opened Jun 11, 2024
Reference for uprating Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

PolicyEngine/policyengine-core#215 · Opened Jun 7, 2024
Documentation on extracting parameter values Open

documentation

Difficulty 3/5 1-2 days Newbie friendliness 20/100

PolicyEngine/policyengine-core#174 · Opened Mar 15, 2024
Results vary depending on sequence of `calc` operations Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

PolicyEngine/policyengine-core#170 · 1 comment · Opened Mar 2, 2024
Per-provision breakdown Open

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

PolicyEngine/policyengine-core#166 · 3 comments · Opened Feb 29, 2024
Option to only uprate thresholds or amounts in scale parameters Open

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

PolicyEngine/policyengine-core#163 · Opened Feb 28, 2024
Add descriptive error message with parameter and snapshot failure Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

PolicyEngine/policyengine-core#160 · Opened Feb 19, 2024
Support arithmetic in uprating parameters Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

PolicyEngine/policyengine-core#159 · Opened Feb 19, 2024
Abolition switch list of variables Open

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

PolicyEngine/policyengine-core#157 · Opened Feb 14, 2024
Offset for variable uprating Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

PolicyEngine/policyengine-core#148 · 1 comment · Opened Jan 24, 2024
List variables affected by a parameter Open

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

PolicyEngine/policyengine-core#146 · Opened Jan 12, 2024
Option to disable `defined_for` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

PolicyEngine/policyengine-core#145 · Opened Jan 4, 2024
Test for valid yaml in CI Open

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

PolicyEngine/policyengine-core#133 · Opened Dec 11, 2023
Test that country packages don't have formulas with entity mismatches Open

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

PolicyEngine/policyengine-core#129 · 3 comments · Opened Nov 26, 2023
Warn when a threshold is missing a rate or amount Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

PolicyEngine/policyengine-core#125 · 2 comments · Opened Oct 31, 2023
Soft definition periods Open

enhancement

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

PolicyEngine/policyengine-core#118 · Opened Oct 2, 2023
Boolean variable naming convention Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

PolicyEngine/policyengine-core#113 · Opened Aug 23, 2023
Replace `adds = "gov.x"` with `adds = "gov['x']` to address keyword issues Open

bug

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

PolicyEngine/policyengine-core#112 · 1 comment · Opened Aug 13, 2023
Reform impact explanations Open

enhancement

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

PolicyEngine/policyengine-core#111 · 1 reaction · Opened Aug 8, 2023
Test that .pdf references in parameters have a page number Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

PolicyEngine/policyengine-core#110 · 2 comments · Opened Aug 5, 2023
Support scale parameter that interpolates over a specified range rather than a rate Open

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

PolicyEngine/policyengine-core#107 · Opened Jul 22, 2023
Compiled formulas Open

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

PolicyEngine/policyengine-core#93 · 1 reaction · Opened Apr 12, 2023
Support scale parameter `.calc()` based on `threshold_variable` in parameter file Open

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

PolicyEngine/policyengine-core#85 · Opened Feb 7, 2023
Support scale parameter `.calc("threshold_variable")` Open

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

PolicyEngine/policyengine-core#84 · Opened Feb 7, 2023
`threshold_variable` metadata field specifying the variable that parameter scale thresholds are based on Open

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

PolicyEngine/policyengine-core#83 · Opened Feb 7, 2023
Pre-install steps Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

PolicyEngine/policyengine-core#71 · 1 comment · 1 reaction · Opened Dec 26, 2022
Remove `name` parameter metadata field Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

PolicyEngine/policyengine-core#65 · Opened Dec 23, 2022
Avoid recomputing unnecessary subtrees Open

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

PolicyEngine/policyengine-core#52 · 6 comments · Opened Dec 8, 2022
Update to numpy 2 Open

code-health good first issue

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

PolicyEngine/policyengine-core#37 · 3 comments · 1 reaction · Opened Oct 31, 2022
Fix Enum mapping issues Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

PolicyEngine/policyengine-core#14 · Opened Oct 3, 2022
Formalise references Open

enhancement

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

PolicyEngine/policyengine-core#13 · 1 reaction · Opened Oct 2, 2022
Add type hints to all variables Open

good first issue

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

PolicyEngine/policyengine-core#3 · Opened Oct 2, 2022
Add custom time periods Open

enhancement

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

PolicyEngine/policyengine-core#1 · 1 reaction · Opened Oct 1, 2022
Add safe return to `Microsimulation.calc` Open

code-health

Difficulty 3/5 1-2 days Newbie friendliness 45/100

PolicyEngine/policyengine-core#358 · 1 reaction · Opened Aug 23, 2021

PolicyEngine/policyengine-core

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