pandas (original) (raw)

-- [x ] tests added / passed

[x ] passes git diff upstream/master -u -- "*.py" | flake8 --diff
[x ] whatsnew entry

The freq parameter of df.rolling/expanding/ewm was deprecated in 0.18 (#11603). This PR removes the parameter from the code base.

After this PR, I will remove the how parameter and lastly the pd.rolling_*, pd.expanding_* and pd.ewm_* will be removed (AKA pd.stats.*). By removing freq and howbefore pd.stats I think it will be easier to clean up pandas/tests/test_window.py, as ATM these three issues are not very cleanly separated in that test module.

In some test in test_window.py::TestMoments there is a bit of resampling going on, as I've moved freq stuff from rolling into a prior df.resample step. These are tests for how and will be removed once how is removed (unless the tests good for testing the windows functions, I'm not completely sure ATM, but will look into it when I reach that point).

Additionally (and unrelated), in pandas/tests/test_window.py there are checks for numpy>=1.8 and >=1.9. These checks are no longer necessary, as numpy 1.9 is the current minium version, so they're removed,.