Learn Python · lesson 22 of 24
Giving a function information
Write a function double that returns its input times 2, and print double(21).
Learn
Put names in the brackets and the function can take information in: def double(n): has one parameter, n. The word return sends an answer back, so print(double(4)) shows 8. A function that returns can be used inside bigger sums.
Your task
Write a function double that returns its input times 2, and print double(21).
Press Run to see what your program prints.
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FAQ
Giving a function information: common questions
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