4. Data and Variables

• 4.1. Values and Data Types
  • 4.1.1. More On Strings
  • 4.1.2. More On Numbers
  • 4.1.3. Check Your Understanding
• 4.2. Type Conversion
  • 4.2.1. Check Your Understanding
• 4.3. Variables
  • 4.3.1. Assigning Values
  • 4.3.2. Evaluating Variables
    • 4.3.2.1. Try This
  • 4.3.3. Reassigning Variables
  • 4.3.4. Check Your Understanding
• 4.4. More on Variables
  • 4.4.1. Naming Python Variables
    • 4.4.1.1. Compare
  • 4.4.2. Keywords
  • 4.4.3. Cool Tricks
  • 4.4.4. Check Your Understanding
• 4.5. Statements and Expressions
• 4.6. Operators
  • 4.6.1. Math Operators
    • 4.6.1.1. The // Operator
    • 4.6.1.2. The % Operator
  • 4.6.2. Check Your Understanding
• 4.7. Order of Operations
  • 4.7.1. Don’t Panic
  • 4.7.2. Check Your Understanding
• 4.8. Other Operators
  • 4.8.1. Updating Variables
  • 4.8.2. String Operators
    • 4.8.2.1. Try It!
  • 4.8.3. Check Your Understanding
• 4.9. User Input
  • 4.9.1. Requesting Data
    • 4.9.1.1. Syntax
    • 4.9.1.2. Try It!
  • 4.9.2. Using the Collected Data
  • 4.9.3. Critical input Detail
  • 4.9.4. Check Your Understanding
• 4.10. Exercises: Data & Variables
  • 4.10.1. Part A - Printing to the Console
  • 4.10.2. Part B - Using Variables
  • 4.10.3. Part C - User Input
• 4.11. Project: Data & Variables
  • 4.11.1. Before You Start
  • 4.11.2. Declare and Assign Variables
  • 4.11.3. Collect User Input
  • 4.11.4. Mass Calculations
  • 4.11.5. Generate the Checklist
    • 4.11.5.1. Example Output
  • 4.11.6. Show Off Your Code