Variables in Python -

Variables in Python

WhatsApp Group Join Now

Telegram Group Join Now

Variables are fundamental elements in programming that allow developers to store and manipulate data. In the context of Python programming, variables play a pivotal role in creating dynamic and interactive applications. In this article, we’ll delve into the concept of variables in Python, how they are declared and used, and their significance in writing efficient and effective code.

A variable is a named location in a computer’s memory that holds a value. It acts as a symbolic representation of data, enabling programmers to work with data in a flexible and organized manner. Variables can hold various types of information, such as numbers, characters, and more complex data structures.

In the below PDF we discuss about Variables in detail in simple language, Hope this will help in better understanding.

Variable Naming Rules :

When naming variables in Python, follow to these rules:

Start with a letter or underscore: Variable names must begin with a letter (a-z, A-Z) or an underscore (_).
Consist of letters, numbers, and underscores: Variable names can include letters, numbers, and underscores. Avoid using special characters or spaces.
Case-sensitive: Python is case-sensitive, meaning myVar and myvar are treated as different variables.
Avoid using reserved keywords: You cannot use Python’s reserved keywords like if, else, for, or while as variable names.
Use descriptive names: Choose meaningful variable names that convey the purpose of the variable. For example, use total_price instead of tp for better code readability.

Declaring and Defining Variables :

In Python, declaring a variable involves specifying its type and name. The syntax is as follows:

# Integer variable
age = 30

# String variable
name = "John Doe"

# List variable
fruits = ["apple", "banana", "cherry"]

# Boolean variable
is_python_fun = True