Module 3: Functions

Breaking code up into managable building blocks (abstraction!)

Language Topics

• Function calls; passing in parameters and using the return value
• Function definitions; specifying the parameters and writing the body
• Module creation and import
• Function and module scope, Python memory management

Textbook chapters 6 and 11 (also memory explained in 2.1)

Assignment: Mountain Paths

Due Tuesday, 11/1

Module 2 Recap

Exam recap

Brief intro to functions

Abstraction with Functions

File I/O lab recap

Tic Tac Toe Assignment recap

Functions

• Predefined Functions
• User Defined Functions

Lab

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Lab assignments (due Thu)

• First Function
• Useful Math
• Practice Problems 1

Image Encoding

Lab recap

Displaying digital images

• Light board handout
• penguin.jpg source image
• penguin.ppm text version (RGB triples), can open in Excel

Manipulating image pixels in code

• penguin.jpg source image
• required glib.py module
• image_manip.py

Assignment: Mountain Paths

• Kickoff handout

Complexity

Assignment: Mountain Paths

• Best path algorithms

Function Problems

Lab

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Lab assignments (due Thu)

• Image Puzzles
• Perlin Noise

Functions Workshop

The Perlin Noise Lab Functions

• Noise function wrapper
• Scaling function
• Source: noise_functions_workshop.py

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Assignments

• Create an exam problem and bring it (written)
• Write out 2 specific questions about functions you want to discuss on Thu

Module Review

Mock exam questions

Exam review questions

Functions and memory

Lab

Module 3 Exam

Lab review (con't)

• Perlin Noise array generation
• 2D array reading example

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Lab assignments

• Perlin Noise lab (due Tue 11/1)
• Mountain Paths assignment (due Thu 11/3)

Still Functions

Exam recap

• Breaking down the AB problem step-by-step

Exam follow-up

• If scored < 320 on Questions 1-6: Complete these Practice Problems and bring to class (hardcopy) on Thursday.
• Else, scored < 90% on either Poker question: Finish it and bring to class (hardcopy) on Thursday.
• Else, take Thursday off

Perlin Noise lab wrapup - testing and debugging

Assignment questions

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Assignments (in order of priority)

• Exam follow-up Questions 1-6
• Finish Mountain Paths assignment for Friday
• Exam follow-up Questions 7 and 9

Module Review

Practice Problems workshop

• Test-driven development
• Grading exercise
• Finish all the problems
• lab_practice2_answers.py

Poker solutions workshop

• Comparing solutions
• Helpful functions?
• The Pythonic approach

Lab

Mountain Paths

• Turn in before lab!
• Workshop to complete for all who did not finish

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Lab assignments

• No labs this week
• Mini make-up exam on Tuesday!