Remove last two characters from column names of all the columns in Dataframe - Pandas

Question

I am joining the two dataframes (a,b) with identical columns / column names using the user ID key and while joining, I had to give suffix characters, in order for it to get

Answer 1

This snippet should get the job done :

df.columns = pd.Index(map(lambda x : str(x)[:-2], df.columns))

Edit : This is a better way to do it

df.rename(columns = lambda x : str(x)[:-2])

In both cases, all we're doing is iterating through the columns and apply some function. In this case, the function converts something into a string and takes everything up until the last two characters.

I'm sure there are a few other ways you could do this.