Replacing -inf values to np.nan in a feature pandas.series

The problem may be that you are not assigning back to the original series.

Note that pd.Series.replace is not an in-place operation by default. The below code is a minimal example.

df = pd.DataFrame({'feature': [1, 2, -np.inf, 3, 4]})

df['feature'] = df['feature'].replace(-np.inf, np.nan)

print(df)

#    feature
# 0      1.0
# 1      2.0
# 2      NaN
# 3      3.0
# 4      4.0

it should work:

df.replace([np.inf, -np.inf], np.nan,inplace=True)