Conditional Statements in Python

1. Python if Statement

In this captivating course, you'll unravel the mysteries of the versatile conditional operator "if," discovering its power to shape outcomes. Dive deeper into the world of logical operators, mastering their artful application and uncovering the secrets of prioritizing their use effectively.

Introduction to if Statement

Syntax of if Statement

Challenge: Mario

Comparison Operators

Logical Operators

Operators Precendence

2. Python if-else Statement

In this section, we are introduced to a more advanced form of the conditional operator - if-else. We will also learn what nested if-else statements are and practice on tasks.

Introduction to if-else Statement

Syntax of if-else Statement

Challenge: Geometric Figure

Challenge: Rock, Paper and Scissors

3. Python if-elif-else Statement

In addition, we will learn about the most advanced form of the conditional operator if-elif-else, get acquainted with the syntax of this construction and how it is applied correctly.

Introduction to if-elif-else Statement

Challenge: Car Brands

Challenge: Ordinal Adjectives

Challenge: Music Playlist Generator

4. Python Ternary Operator

Unlock the efficiency of one-liner decisions with the ternary operator! This coding gem, popular in Pythonic style, lets you streamline your choices in a single line, making your code both concise and elegant.

Conditional Expression

Challenge: Discount Calculator

Challenge: Password Strength

Operators Precendence

Python has priorities in which order the operations are performed. You must use parentheses to change the order of calculations.

However, if you do not use parentheses, the priorities in the operators are as follows:

The precedence among logical operators:

Let's clarify this with example:

In the code above, you can see that the expressions only differ because of the parentheses, leading to completely different outcomes. Let's break it down:

first_result is showing that and has higher precedence than or, resulting in True;
second_result uses parentheses to force True or False to evaluate first, then applies and False, resulting in False;
third_result shows that not has the highest precedence, making the expression equivalent to (not True) or False, resulting in False.

Tarea

Create a program that checks whether a given year is a leap year. A leap year is divisible by 4 but not divisible by 100, except if it's also divisible by 400. The program should output either 'Leap year' or 'Not a leap year' accordingly.

The main condition of the leap year is that year must be divided by 4. Use year % 4 == 0;
The second condition is that the year must not be divided by 100. Use year % 100 != 0;
But if the year is divisible by 400 is the leap year. Use year % 400 == 0.

¿Todo estuvo claro?

Sección 1. Capítulo 6

Contenido del Curso

Conditional Statements in Python

1. Python if Statement

Introduction to if Statement Syntax of if Statement Challenge: Mario Comparison Operators Logical Operators Operators Precendence

2. Python if-else Statement

Introduction to if-else Statement Syntax of if-else Statement Challenge: Geometric Figure Challenge: Rock, Paper and Scissors

3. Python if-elif-else Statement

Introduction to if-elif-else Statement Challenge: Car Brands Challenge: Ordinal Adjectives Challenge: Music Playlist Generator

4. Python Ternary Operator

Conditional Expression Challenge: Discount Calculator Challenge: Password Strength

Conditional Statements in Python

Operators Precendence

Python has priorities in which order the operations are performed. You must use parentheses to change the order of calculations.

However, if you do not use parentheses, the priorities in the operators are as follows:

The precedence among logical operators:

Let's clarify this with example:

In the code above, you can see that the expressions only differ because of the parentheses, leading to completely different outcomes. Let's break it down:

first_result is showing that and has higher precedence than or, resulting in True;
second_result uses parentheses to force True or False to evaluate first, then applies and False, resulting in False;
third_result shows that not has the highest precedence, making the expression equivalent to (not True) or False, resulting in False.

Tarea

The main condition of the leap year is that year must be divided by 4. Use year % 4 == 0;
The second condition is that the year must not be divided by 100. Use year % 100 != 0;
But if the year is divisible by 400 is the leap year. Use year % 400 == 0.

¿Todo estuvo claro?

Sección 1. Capítulo 6