Merge multiple dataframes based on a common column [duplicate]

Answer 1

Try this line of code here:

 df.set_index('key').join(df2.set_index('key'))

You can check the documentation on the 'key' to reference your code properlly. https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.join.html

Set the 'key' equal to the column you wish to merge with the rest!

Hope this helps.