FAQ: Cleaning and Transforming Columns - Let's Review

This community-built FAQ covers the “Let’s Review” exercise from the lesson “Cleaning and Transforming Columns”.

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This exercise can be found in the following Codecademy content:

Getting Started with Python for Data Science

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Hi,
this might be to most trivial question but I’m an absolute beginner and don’t have a clue how to solve the problem.

I’ve renamed a column of a dataframe and it worked, there’s no error message and there’s also the dataframe shown with the renamed column. But… when I continue with working in the Jupyter notebook the renaming has gone. I tried df.info() immediately afterwards and it does not show the renamed column…

Has anybody an idea what I’m overlooking?

Thanks!