Python is very intelligent, in python, there is no need to define the data type of variable, simply you can assign the value to a variable by value it will recognize its data type.
Example:
a=10 // Python will take it as an integer value
b="10" // Python will take it as string value
Here only we are assigning the value we are not declaring the variable data type.
Example 2: Now we will create the simple Program to add two number to clear our variable thing.
a=10
b=20
c=a+b
print(c)
output: 30
Here we only define the value, not the data type.
Important: There is no need to terminate the line by putting semicolon which we do in another programming language. Like PHP, java,c ,c++