Variables in Python

October 5, 2023

Variables in Python:

In Python, variables are used to store data values. Variables are essentially names that refer to a particular location in memory where a value is stored. In the context of data storage, variables can be viewed as containers.

Variable in Python

In Python, variables are used as a container and when we assign a value, a variable is created.

There are some rules of Python variable:

Variable names must begin with either an underscore (_) or a letter (a-z, A-Z).
The remaining characters in the variable name can be letters, numbers (0–9), and underscores.
MyVar and myvar are different variables because variable names are case-sensitive.
Some reserved keywords in Python (including if, while, and for) cannot be used as variable names.

Tasks done in Python Variable:

Assigning a Value:

For Assign a value we use single equals sign (=).

Example: x = 32

#Here ‘x’ is a variable and it contain the value ’32’.

Casting:

Casting is a technique that can be used to specify the data type of a variable.

Example:

x = float(3) #x will be 3.0
y = str(3) #y will be ‘3’

Get the Type:

The type() method provides the data type of a variable.

Example:

print(type(3)) #int
print(type(“Prepinsta”)) #str

Case Sensitive:

Variables are case sensitive.

Example:

X = 30
x = 3
#x will not overwrite

Swap two variables in python

Swap two variables in python without using third variable

Swap two variables using function in python

Global Variable in Python

Global variable and keyword in Python

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Variables in Python