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 Pandas merge question
I hope you are all having a good day. I want to know why my merge below is returning the key error that is stated below my code. Any help would be appreciated.

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import seaborn as sns
%matplotlib inline






KeyError: 'months'
Your example works for me. Perhaps you forgot to run line 15 (that renames month column as months column), so there was no 'months' key in df1 and merge failed?

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