Setup flake8 CI job

[NoharaMasato]

Summary:

• Fix flake8 errors

$ flake8 .
geojson/codec.py:30:80: E501 line too long (82 > 79 characters)
geojson/codec.py:32:80: E501 line too long (88 > 79 characters)
geojson/geometry.py:15:80: E501 line too long (82 > 79 characters)
geojson/utils.py:212:11: E275 missing whitespace after keyword
geojson/utils.py:214:13: E275 missing whitespace after keyword
geojson/utils.py:216:13: E275 missing whitespace after keyword

• Setup CI job for flake8

[codecov]

Codecov Report

Merging #207 (c35a19e) into main (3a3a1b3) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #207   +/-   ##
=======================================
  Coverage   98.25%   98.25%           
=======================================
  Files          19       19           
  Lines         801      801           
=======================================
  Hits          787      787           
  Misses         14       14           

Impacted Files	Coverage Δ
geojson/utils.py	95.53% <100.00%> (ø)

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[NoharaMasato]

I don't know why this change decreased the test coverage and caused a job failure on CI. Please let me know if I need to add unit tests for the utils.py

[NoharaMasato]

Added a test for utils.py in #210

[hugovk]

Looks good, a couple of suggestions.

[hugovk]

Or a better idea, let's do it using the existing pre-commit!

Add this to .pre-commit-config.yaml:

 repos:
+  - repo: https://github.com/PyCQA/flake8
+    rev: 6.0.0
+    hooks:
+      - id: flake8
+
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.4.0
     hooks:

And replace lint.yml with:

name: Lint

on: [push, pull_request, workflow_dispatch]

permissions:
  contents: read

jobs:
  lint:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3
      - uses: actions/setup-python@v4
        with:
          python-version: "3.x"
      - uses: pre-commit/action@v3.0.0

did not see full conversation in thread

[NoharaMasato]

@hugovk , @rayrrr
Thanks for checking the PR. Updated to use pre-commit hook to run link on CI.

[hugovk]

Thank you!