how to change the columns of a dataframe in python
new_columns = {"col1": "1st", "col2": "2nd"}
df_new = df.rename(columns=new_columns)
"""
col1 | col2 | col3 1st | 2nd | col3
a | d | g a | d | g
b | e | h => b | e | h
c | f | i c | f | i
"""How to Create new dataframe columns from existing column
new_df = df.filter(like='n_')
.replace(0., np.inf)
.apply(lambda x: sorted(x), axis=1, result_type='expand')
.replace(np.inf, 0.0)
new_df.columns = ['new_1', 'new_2', 'new_3']
out = pd.concat([df, new_df], axis=1)Copyright © 2021 Codeinu
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