How to write a pd.dataframe method?

Question

def f(df):
    # do sth on pd.df
    return new_df

Any way could let me use df.f() instead of using f(df) to execute f() on df?

Answer 1

Don't go to the place where you subclass the DataFrame. There be dragons.

Instead, write your function as you have and then do:

df = df.pipe(your_fxn)