MNT: Use flake8 linter

Author: kernc

.github/workflows/ci.yml

@@ -39,14 +39,14 @@ jobs:
       - run: pip install -U .[test]
 
       - if: matrix.test-type == 'lint'
-        run: ruff backtesting
+        run: flake8 backtesting setup.py
       - if: matrix.test-type == 'lint'
         run: mypy backtesting
       - if: matrix.test-type == 'lint'
         env: { BOKEH_BROWSER: none }
         run: time catchsegv coverage run -m backtesting.test
       - if: matrix.test-type == 'lint'
-        run: bash <(curl -s https://codecov.io/bash)
+        run: coverage report
 
       - if: '! matrix.test-type'
         env: { BOKEH_BROWSER: none }

backtesting/lib.py

@@ -305,7 +305,7 @@ def func(x, *_, **__):
             strategy_I = frame.f_locals['self'].I             # type: ignore
             break
     else:
-        def strategy_I(func, *args, **kwargs):
+        def strategy_I(func, *args, **kwargs):  # noqa: F811
             return func(*args, **kwargs)
 
     def wrap_func(resampled, *args, **kwargs):

backtesting/test/_test.py

@@ -750,8 +750,8 @@ def test_resample(self):
         bt = Backtest(GOOG, SmaCross)
         bt.run()
         import backtesting._plotting
-        with _tempfile() as f,\
-                patch.object(backtesting._plotting, '_MAX_CANDLES', 10),\
+        with _tempfile() as f, \
+                patch.object(backtesting._plotting, '_MAX_CANDLES', 10), \
                 self.assertWarns(UserWarning):
             bt.plot(filename=f, resample=True)
             # Give browser time to open before tempfile is removed

setup.cfg

@@ -1,5 +1,5 @@
 [flake8]
-max-line-length = 100
+max-line-length = 120
 exclude =
     .git,
     .eggs,

setup.py

@@ -49,7 +49,7 @@
                 'sambo',
             ],
             'dev': [
-                'ruff==0.0.160',
+                'flake8',
                 'coverage',
                 'mypy',
             ],