Course Content

Introduction to Python

1. First Acquaintance

The Very First Steps Comments Some Simple Math More Challenging Math Challenge Bringing It All Together

2. Variables and Types

Storing Numbers Naming Rules Using Variables Data Types Numbers Challenge Storing Text String Indexing Negative Indexing and Length String Slicing Challenge Concatenation

3. Conditional Statements

Boolean Data Type Challenge: Comparison Operators Combining Conditions Challenge: Logical Operators Membership Operators and Types Comparison Simple if/else Expressions Challenge: Grocery Store Challenge: Odd and Even if/elif/else Expressions Challenge: Grocery Store 2 Challenge: Positive, Negative or Zero

4. Other Data Types

What Is a List?List Methods Challenge Nested Lists Challenge What Is a Tuple?Tuple Methods Challenge Nested Tuples Challenge What Is a Dictionary?Challenge Dictionary Methods Challenge

5. Loops

while Loop Challenge for Loop Challenge Range Challenge Iterating Over Indexes Nested Loops

6. Functions

Built-in Functions Challenge Defining Your First Function Challenge if/else Statements in Functions Challenge Functions With No Return Challenge Modifying Functions Challenge Lambda Functions Challenge

Introduction to Python

More Challenging Math

Nice work! Python provides several additional math operations, including:

// - floor division or integer division;
% - modulus or remainder after division;
** - exponentiation or raising to a power;

It's important to note that you can't use the traditional ^ symbol for exponentiation in Python, as it yields a different result. The syntax for these operations mirrors that of basic arithmetic. For example, 18 // 4 results in 4, because we're taking the whole number from the division (the actual result being 4.5). 14 % 5 gives 4, because when we divide 14 by 5, the remainder is 4. 4 ** 3 results in 64, because 4 multiplied by itself three times equals 64.

Task

On the second line, compute the floor division of 234 by 32.
On the fourth line, determine the remainder when 356 is divided by 17.

Why are these operations helpful?

For instance, picture this scenario: You've got $50 and you want to buy as many cookie packs as possible, with each pack priced at $6. You're trying to figure out the max number of packs you can purchase and the change you'll receive. Using the operations above, you can solve this easily.

50 // 6 gives 8, which means you can buy 8 packs.
50 % 6 results in 2, indicating you'll have $2 left after buying 8 packs.

Everything was clear?

Section 1. Chapter 4