Pandas append() method depreciated, replace all occurrences with concat()

[EwoutH]

Using DataFrame.append() is depreciated with Pandas 1.4. All occurrences should be replaced with pandas.concat() to ensure compatibility with future Pandas version.

See pandas-dev/pandas#35407 for their motivation why they depreciated it.

[quaquel]

Do you have examples from the code where this syntax is still used? I fixed a number of them in various places as part of the 2.1 release.

[EwoutH]

If you search in a recent CI run on depr or .append you will find some. The difficult thing is that .append() also a method is for other classes.

I tried to use PyCharm to automatically find instances of DataFrame.append(), but couldn't figure out how.

If you take this run for example, there is one in:

EMAworkbench/ema_workbench/analysis/feature_scoring.py

Line 389 in 14488d7

complete = complete.append(fs.T, sort=True)

and one in

EMAworkbench/ema_workbench/analysis/logistic_regression.py

Line 253 in 3d16223

self.peeling_trajectory = self.peeling_trajectory.append(

These might be the only ones, there might be more.

[EwoutH]

I think all cases are gone, so this issue can be closed. Thanks!

[quaquel]

great, thanks for checking.