introduction to computer science

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• Why Learn Programming?
• Learning to Code
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Handouts from Class

• Chapter Four: Graphics
  1. graphics_example_2.py. Basics of Zelle's graphics package.
  2. graphics_example_4.py. Illustrates how to get text from an entry box and open multiple windows.
  3. graphics_example_5.py. Illustrates how use the setCoords function in Zelle's graphics package.
  4. graphics_example_6.py. Illustrates different ways to set colors in Zelle's package. Also shows how to use the randrange function to set random colors. package.
• Chapter Five: Text Processing
  1. file_output_example.py. A simple example writing data to a file.
  2. text2numbers.py. Convert text to numbers.
  3. numbers2text.py. Convert numbers to text.
  4. file_input_example.py. Example showing how to input data from a file.
  5. file_input_example.2.py. Another example showing how to input data from a file.
• Chapter Six: Functions
  1. dave_function_1.py. A simple function example.
  2. dave_function_5.py. Overview of functions.
• Chapter Seven: Control Statements
  1. dave_if_1.py. Simple if statements.
  2. dave_max.py. Different ways of illustrating a max function.
• Chapter Eight: More Control Statements
  1. dave_for_review.py. Review of for loops.
  2. dave_while_1.py. Intro to while statement
  3. dave_while_2.py. More while loop, including a "sentinel" loop.
  4. dave_while_3.py. An end of file loop.
  5. dave_boolean_1.py. An introduction to Boolean statements.
  6. dave_boolean_2.py. Using expressions as Boolean statements.
  7. dave_break.py. Using a break statement to exit a while loop.
• Chapter 10: Classes
  1. dave_class_review.py. A short program that reviews classes.
  2. dave_class_student.py. A program that illustrates how to define classes.
  3. dave_class_purple_sheep.py. A program involving purple sheep. Not sure where this is headed.