Download Learn Python the Hard Way (1st Edition) by Zed A. Shaw PDF

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By Zed A. Shaw

Research Python The difficult method is a booklet I wrote to coach programming to those who don't know tips on how to code. It assumes you're most likely an influence person of your computing device, after which takes you from not anything to programming uncomplicated video games. After interpreting my e-book try to be prepared for plenty of of the opposite programming books available in the market.

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Extra info for Learn Python the Hard Way (1st Edition)

Example text

Related to escape sequences, try to find out why the last line has ’6\’2"’ with that \’ sequence. See how the single-quote needs to be escaped because otherwise it would end the string? 36 Exercise 11: Asking Questions Exercise 12: Prompting People When you typed raw_input() you were typing the ( and ) characters which are parenthesis. This is similar to when you used them to do a format with extra variables, as in "%s %s" % (x, y). For raw_input you can also put in a prompt to show to a person so they know what to type.

Finally you have a function that has no arguments in print_none. Warning: This is very important. Do not get discouraged right now if this doesn’t quite make sense. We’re going to do a few exercises linking functions to your scripts and show you how to make more. For now just keep thinking “mini script” when I say “function” and keep playing with them. ' I got nothin'. $ Right away you can see how a function works. Notice that you used your functions the way you use things like exists, open, and other “commands”.

Dum dum dah! Every programmer will go on and on about functions and all the different ideas about how they work and what they do, but I will give you the simplest explanation you can use right now. Functions do three things: 1. They name pieces of code the way variables name strings and numbers. 2. They take arguments the way your scripts take argv. 3. Using #1 and #2 they let you make your own “mini scripts” or “tiny commands”. You can create a function by using the word def in Python. I’m going to have you make four different functions that work like your scripts, and then show you how each one is related.

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