PandasdrillMonth over month growth
A pandas exercise from Pandasdrill. Solve it with a Python editor in your browser running real pandas, and it is checked the moment you submit.
The task
Return the month over month change in `revenue` as a fraction (0.25 means 25 percent growth). The first month has no prior month and is NaN.
What this exercise teaches
pct_change computes (current - previous) / previous for every row. diff would give the change in dollars rather than as a fraction.
A hint if you get stuck
pct_change compares each value with the one before it.
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