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KwickClips Python · 39 sec · free

How do you add 5 to every mark without a loop?

Short answer. Use a numpy array: m + 5.

What does tolist() do?

It turns the array into a list.

Remember

Install: python -m pip install numpy
Arrays work on all at once

Grace marks for everyone, no loop? Here m is a numpy array of marks. Plus five adds to every mark at once. Tolist makes a list. Mean gives the average. Install numpy with pip. Arrays work on all at once.

This clip is from the full lesson: Working with JSON and Third-party Libraries — 8 minutes, with the tables, the quick answers and the whole lesson in text.

Useful for: Programming All levels Python, Programming All levels Python, Programming All levels Python, Programming All levels Python

More KwickClips from this lesson

Slide explaining a library and pip, with the command python -m pip install numpy.What is pip?40 secPython code using json.loads on a JSON string and printing marks plus 2 as 90.What does json.loads() do?39 secSlide with four checks for choosing a Python library: release, docs, users, exact name.How do you pick a good library?41 sec
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