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Python Snake Course Lesson 3 - List and Dicts

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Lesson 3 focuses on three very useful data structures: lists, tuples and dictionaries.

We use the Python code at the end of lesson 2 as a starting point. Our objective in this lessons are that the snake begins to move at last, and looks less like a square and more like a snake.

This is the agenda:

• a very brief recap of the first two lessons and introduction to this lesson
• a short lesson to introduce dicts
• use a dict to make the if block that changes the colour of the snake to be more elegant and Pythonic
• make our snake move one square if an arrow key is pressed
• a short lesson to introduce lists and tuples
• implement our snake as a list of tuples