Variables and Data types in Python

 

Python is a high-level, interpreted programming language that is popular for its simplicity, readability, and versatility. It is used for a variety of purposes, including web development, data analysis, scientific computing, and artificial intelligence. In this blog, we will cover some basic concepts of Python programming language.

Variables and Data types :

In Python, a variable is a container for storing data. Variables are created when they are first assigned a value. Python has several built-in data types, including strings, integers, floating-point numbers, and booleans. Variables can store any of these data types. 

For example:

name = "John"

age = 30

height = 1.75

is_student = True

Here, name is a string, age is an integer, height is a floating-point number, and is_student is a boolean.

Variable Names:

A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). 

Rules for Python variables 

• A variable name must start with a letter or the underscore character.
• A variable name cannot start with a number.
• A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ ).
• Variable names are case-sensitive (age, Age and AGE are three different variables).
• A variable name cannot be any of the Python keywords.

Example:

myvar = "John"

my_var = "John"

_my_var = "John"

myVar = "John"

MYVAR = "John"

myvar2 = "John"

print(myvar)

print(my_var)

print(_my_var)

print(myVar)

print(MYVAR)

print(myvar2)

Output:

John

John

John

John

John

John