3. More On Flow of Control

You have varied the normal forward sequence of operations with functions and for loops. To have full power over your programs, you need two more constructions that changing the flow of control: decisions choosing between alternatives (if statements), and more general loops that are not required to be controlled by the elements of a collection (while loops).

• 3.1. If Statements
  • 3.1.1. Simple Conditions
  • 3.1.2. Simple if Statements
  • 3.1.3. if-else Statements
  • 3.1.4. More Conditional Expressions
    • 3.1.4.1. Graduate Exercise
    • 3.1.4.2. Head or Tails Exercise
    • 3.1.4.3. Strange Function Exercise
  • 3.1.5. Multiple Tests and if-elif Statements
    • 3.1.5.1. Sign Exercise
    • 3.1.5.2. Grade Exercise
    • 3.1.5.3. Wages Exercise
  • 3.1.6. Nesting Control-Flow Statements
    • 3.1.6.1. Short String Exercise
    • 3.1.6.2. Even Print Exercise
    • 3.1.6.3. Even List Exercise
    • 3.1.6.4. Unique List Exercise
  • 3.1.7. Compound Boolean Expressions
    • 3.1.7.1. Congress Exercise
  • 3.1.8. More String Methods
    • 3.1.8.1. Article Start Exercise
    • 3.1.8.2. Is Number String Exercise
• 3.2. Loops and Tuples
  • 3.2.1. Exercises
    • 3.2.1.1. Choose Button Exercise
• 3.3. While Statements
  • 3.3.1. Simple while Loops
  • 3.3.2. The Most General range Function
  • 3.3.3. Interactive while Loops
    • 3.3.3.1. Interactive Sum Exercise
    • 3.3.3.2. Safe Number Input Exercise
    • 3.3.3.3. Savings Exercise
    • 3.3.3.4. Strange Sequence Exercise
  • 3.3.4. Graphical Applications
    • 3.3.4.1. Exercise Moving Undraw
    • 3.3.4.2. Make Path Exercise
    • 3.3.4.3. Random Start Exercise
    • 3.3.4.4. Mad Lib While Exercise
    • 3.3.4.5. Find Hole Game Exercise
  • 3.3.5. Fancier Animation Loop Logic (Optional)
• 3.4. Arbitrary Types Treated As Boolean
• 3.5. Further Topics to Consider
• 3.6. Summary