Learn Python the Hard Way: A Very Simple Introduction to the by Zed A. Shaw

By Zed A. Shaw

Zed Shaw has perfected the world's top process for studying Python. keep on with it and you may succeed-just just like the thousands of novices Zed has taught thus far! You deliver the self-discipline, dedication, and endurance; the writer provides every thing else.

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Extra resources for Learn Python the Hard Way: A Very Simple Introduction to the Terrifyingly Beautiful World of Computers and Code (3rd Edition)

Sample text

Look online for what the pydoc command does. 4. Use pydoc to also read about open, file, os, and sys. It’s alright if you do not understand those; just read through and take notes about interesting things. Common Student Questions How come I get SyntaxError: invalid syntax whenever I run pydoc? You aren’t running pydoc from the command line; you’re probably running it from inside python. Exit out of python first. Why does my pydoc not pause like yours does? Sometimes if the help document is short enough to fit on one screen, then pydoc will just print it.

Why does this not make sense to me? Try making the numbers in this script your measurements. It’s weird, but talking about yourself will make it seem more real. 30 EXERCISE 6 Strings and Text W hile you have already been writing strings, you still do not know what they do. In this exercise, we create a bunch of variables with complex strings so you can see what they are for. First an explanation of strings. A string is usually a bit of text you want to display to someone or “export” out of the program you are writing.

If you put quotes around them, then they are turned into strings and won’t work right. You’ll learn more about how these work in Exercise 27. I tried putting Chinese (or some other non-ASCII characters) into these strings, but %r prints out weird symbols. Use %s to print that instead and it’ll work. Why does %r sometimes print things with single-quotes when I wrote them with double-quotes? Python is going to print the strings in the most efficient way it can, not replicate exactly the way you wrote them.

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