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is there a way I can invert values in a dataframe using Pandas? I am using data representing customers feedback. It is captured as a value from 1 to 5, 5 being the best feedback and 1 the lowest. I would like to invert it so that 1 becomes the highest score, so basically all the 5s become 1s, 4 becomes 2 and 3 stays 3. Is there a way I can achieve that? Many thanks in advance.

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  • df['col_name'] = 5 - df['col_name']? Commented Apr 29, 2019 at 12:11

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df['Feedback'] =6- df['Feedback']
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The map function is used for substituting each value in a Series with another value. So, you should try:

df['col_name'] = df['col_name'].map({5:1, 4:2, ...})

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