Pandas dataframe initialization changes the value of the original dataframe

Question

Screenshot

Please look at the screenshot attached.

I created a Dataframe df then Initialized another Dataframe tesla which holds df

Then I perform my Manipulations on tesla and then when I check back on df

df has changed too.

Why is this happening?

I have been using Pandas for a long time now and haven't noticed this issue.

Answer 1

您应该使用copy ，然后在新df中应用更改时，它不会更改原始df

tesla=df.copy()