May 2019
Beginner
704 pages
16h 29m
English
Content preview from Python All-in-One For Dummies
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Chapter 1
Working with Numbers, Text, and Dates
IN THIS CHAPTER
Mastering whole numbers
Juggling numbers with decimal points
Simplifying strings
Conquering Boolean true/false
Uncovering dates and times
Computers in general, and certainly Python, deal with information in ways that are different from what you may be used to in your everyday life. This takes some getting used to. In the computer world, numbers are numbers you can add, subtract, multiply, and divide. Python also differentiates between whole numbers (called integers) and numbers that contain a decimal point (called floats). Words (textual information like names and addresses) are stored as strings, which is short for “a string of characters.”
In addition to numbers and strings, there are Boolean values, which can be either True or False, but nothing else. In real life, we also have to deal with dates and times, which are yet another type of information. Python doesn't actually have any built-in data type for dates and ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.