Python Logic and Numbers

What you will learn

• Arithmetic operators
• Floor division and modulo
• Operator precedence
• int and float conversion
• Booleans
• Comparisons
• if / elif / else
• Conditional expressions
• Logical operators
• Truthiness

Lessons

1. 1

   Numbers and Operators

   Divide three ways, take remainders, convert between int and float, raise powers in the right order, round results and update values in place.

   14 exercises

2. 2

   Booleans and Comparisons

   Ask yes-or-no questions with comparison operators, count answers as numbers, compare floats and text safely, and check ranges with chained comparisons.

   14 exercises

3. 3

   if, elif and else

   Run different code depending on conditions, order an elif chain, tell separate ifs from a chain, nest decisions, cover every path, and pick a value with a conditional expression.

   15 exercises

4. 4

   and, or, not and Truthiness

   Combine conditions in the right order, rely on short-circuiting, learn what Python treats as true or false, test for None the right way, and avoid the or-default and plain-English traps.

   15 exercises

5. 5

   Putting It Together

   Turn real business rules into functions: guard clauses in priority order, password checks, ticket prices, rounding up, shipping tiers, leap years and a FizzBuzz report.

   10 exercises

How you practice

You practice in the browser and every exercise gives you feedback right away. This course uses these formats:

• Code exercise: 25
• Predict the output: 12
• Fix the bug: 9
• Type the answer: 7
• Fill in the blank: 6
• Match the pairs: 2
• Select all that apply: 2
• Reorder lines: 2
• Multiple choice: 2
• Spot the bug: 1

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