jaraco/inflect

import time is unacceptably slow

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#212 opened on Jun 20, 2024

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Description

When switching from version 7.0.0 to 7.2.0, the import time grew from around 42ms to around 1.3 Seconds (31X slower)

By profiling the code running on import it seems that the issue stems from the switch from pydantic to typeguard

reproduction

pip install inflect==7.2.0
time python -c "import inflect" # results in around 1.3 seconds

pip install inflect==7.0.0
time python -c "import inflect" # results in around 0.13 seconds

python -X importtime -c "import inflect" was also useful to get the exact timing found above

related PR - https://github.com/jaraco/inflect/pull/199

Contributor guide

Research direction
Profile the import of inflect using 'python X importtime' to identify which modules slow down. Focus on typeguard's import time overhead and explore ways to defer or lazy load type checking.
Tech stack
python
Domain
backend
Issue type
Performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
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Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Python
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45