Dataframe set_index not setting

You need to either specify inplace=True, or assign the result to a variable. Try:

df.set_index('Timestamp', inplace=True, drop=True)

Basically, there are two things that you might want to do when you set the index. One is new_df = old_df.set_index('Timestamp', inplace=False). I.e. You want a new DataFrame that has the new index, but still want a copy of the original DataFrame. The other is df.set_index('Timestamp', inplace=True). Which is for when you want to modify the existing object.

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