Python

Start at 01. The first lesson names the types. The next one builds an object. Each sample is on the page.

1. Skill

   Basics

   The types, explained, then an object you can name and call.

   1. 01 Python from zero: a value has a type Start here

      Every Python value has a type. name is a str, cents is an int, and ready is a bool. The program prints latte $4.50 ready, then str int bool.

      Adds The types this course uses

      2 min read

   2. 02 Python from zero: a class is the object

      A class groups fields and a method. Item stores a drink and a price in cents. label prints latte $4.50.

      Adds An object you can name and call

      Builds on 12 min read

2. Practice

   Tips

   A rule that prevents a bug, then a program that uses the object.

   1. 03 Python from zero: two names can share one list

      Assigning a list to a second name does not copy it. list() does. The program adds a muffin to the ticket and prints ['latte'] ['latte', 'muffin'].

      Adds A tip that prevents a bug

      Builds on 1 through 22 min read

   2. 04 Python from zero: a method uses self

      A method changes the object through self. A bill starts at 0 cents, add puts a latte on it, and the program prints 450.

      Adds A program that uses the object

      Builds on 1 through 32 min read

3. Further

   A whole program

   One more idea, then a program that puts the pieces together.

   1. 05 Python from zero: money is a Decimal

      A price is a Decimal made from a string, not a float. Three americanos at 4.10 print 12.30, and the total equals Decimal("12.30").

      Adds A program that puts the pieces together

      Builds on 1 through 42 min read

   2. 06 Python from zero: a method is enough

      A function can call label on any object that has label. Item has that method. show prints latte $4.50.

      Adds A program that puts the pieces together

      Builds on 1 through 52 min read