Python Tutorial
Python Variables
Variables are containers that hold data values.
Creating Variables
There isn’t a variable declaration command in Python.
As soon as you give a variable a value, it is created.
Example
x = 5
y = “John“
print(x)
print(y)
Variables can alter their type after they have been set, and they are not required to be defined with a certain type.
Example
x = 4 # x is of type int
x = “Sally“ # x is now of type str
print(x) 
Casting
Example
x = str(3) # x will be ‘3’
y = int(3) # y will be 3
z = float(3) # z will be 3.0 Acquire the Type
The type() method returns the data type of a variable.
x = 5
y = “John“
print(type(x))
print(type(y))
Single or Double Quotes?
String variables can be declared using single or double quotes:
Example
x = “John“
# is the same as
x = ‘John‘ Case-Sensitive
Variable names are case-sensitive.
Example
This will create two variables:
a = 4
A = “Sally“
#A will not overwrite a Exercise
What is a correct way to declare a Python variable?