August 2019
Beginner
482 pages
12h 56m
English
Content preview from Learn Python by Building Data Science Applications
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Chapter 2
Why do we need to use variables in code?
Variables work as aliases or symbols in mathematic equations. With variables, we can write business logic, or how, without knowing specific values, or what, beforehand – we don't have to repeat doing so over and over again.
What is the recommended way of naming variables? Why does it matter?
There are a few simple requirements when it comes to naming variables that are mandatory—they can't start with a number, contain whitespaces, or special characters. Finally, none of the keywords that are reserved by Python can be used.
That being said, there is some guidance on to better naming; first of all – PEP8. According to PEP, it is recommended to name variables meaningfully and consistently so ...
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