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

Challenge: Positive, Negative or Zero

Recall the exercise from two chapters back. In that challenge, you crafted an if/else statement to determine if a number was even or odd. Now, let's create another conditional structure that identifies zeros, positive numbers, and negative numbers.

Task

Design an if/elif/else statement to assess whether the number num is positive, negative, or zero.

If num is negative, print "The number num is negative";
If num is positive, print "The number num is positive";
If num is 0, print "The number num is zero".

To accomplish this, fill in the blanks (indicated by ___) in the print() functions with the appropriate terms.

Everything was clear?

Section 3. Chapter 11