Learn Python Control Statements with Examples | Beginner's Guide

• Pitambar Mahato
• May 6, 2023
• 256 Views

• Tags: Python Loop If-Else Control-Statements

Overview of Control Statements

Control statements are the foundation of programming languages. These statements control the flow of execution in a program and allow developers to make decisions and execute certain code based on those decisions.

Different Types of Control Statements

There are three different types of control statements:

- Sequential Statements

- Conditional Statements

- Iterative Statements

In this blog post, we will focus on the conditional and iterative statements in Python.

Python Control Statements

A. If Statement

1. Definition

The "if" statement is a conditional statement that executes a block of code if a condition is true.

2. Syntax

The syntax for an "if" statement is as follows:

if condition:
    statement

3. Example

Here is an example of an "if" statement in Python:

x = 10
if x > 5:
    print("x is greater than 5")

B. If-Else Statement

1. Definition

The "if-else" statement is a conditional statement that executes one block of code if a condition is true, and another block of code if the condition is false.

2. Syntax

The syntax for an "if-else" statement is as follows:

if condition:
    statement
else:
    statement

3. Example

Here is an example of an "if-else" statement in Python:

x = 2
if x > 5:
    print("x is greater than 5")
else:
    print("x is less than or equal to 5")

C. Nested If Statement

1. Definition

The "nested if" statement is a conditional statement that contains another "if" statement within its block of code.

2. Syntax

The syntax for a "nested if" statement is as follows:

if condition:
    if condition:
        statement

3. Example

Here is an example of a "nested if" statement in Python:

x = 10
y = 5
if x > 5:
    if y > 3:
        print("Both x and y are greater than their respective values")

D. For Loop

1. Definition

The "for" loop is an iterative statement that allows developers to loop through a sequence of values.

2. Syntax

The syntax for a "for" loop is as follows:

for variable in sequence:
    statement

3. Example

Here is an example of a "for" loop in Python:

fruits = ["apple", "banana", "cherry"]
for x in fruits:
    print(x)

E. While Loop

1. Definition

The "while" loop is an iterative statement that executes a block of code as long as a condition is true.

2. Syntax

The syntax for a "while" loop is as follows:

while condition:
    statement

3. Example

Here is an example of a "while" loop in Python:

i = 1
while i < 6:
    print(i)
    i += 1

Conclusion

A. Summary

Control statements are an essential part of any programming language. In Python, we have different types of control statements, including conditional and iterative statements. The "if" statement is a conditional statement that executes a block of code if a condition is true. The "if-else" statement is a conditional statement that executes one block of code if a condition is true and another block of code if the condition is false. The "nested if" statement is a conditional statement that contains another "if" statement within its block of code.