Control Flow in Python

To make a program do different things for different inputs, we need loops and branches.

Image made by me using the python logo, cool-retro-term, vim, the onedark color scheme, and GIMP.

In the first article of this series, we set up python for the rest of the series. In the second article, we introduced some fundamental objects and operators on those objects. At this point, we know enough to make working programs, but these programs can only do one thing. To fix the problem, we need to introduce branches, loops, and functions.

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Branches allow us to do different things in different scenarios, loops allow us to do the same thing over and over and over again, and functions allow us to greatly simplify our code.

Topics Covered

As always, here are the topics covered. If you know these well, skip this article (and maybe read one of my other articles).

• Boolean Values: True and False
• if: (conditional branches/selection statements)
• for and while: (loops)
• break and continue
• List Comprehension
• range
• enumerate
• def: (functions)

On Experimenting