Day 4 - None Datatype & input() function in Python

None Datatype:

The Python NoneType is a data type that represents the absence of a value. In Python, the NoneType is represented by the keyword "None".

Example:
In this example When you run the code, it will display "hello".

def display(): print("hello") display() 

Output:

hello 

Example 2:

The None is printed because that's the default return value of a function that doesn't have an explicit return statement.

def display(): print("hello") print(display()) 

Output:

hello None 

Example 3:

"hello" is printed by the print() inside the function.
30 is printed by the print() outside the function, which displays the value returned by display().

def display(): print("hello") return 10+20 print(display()) 

Output:

hello 30 

input() function:
The builtin function input() in Python takes input from a user and returns it as a string by default.

Example:

name = input("Enter your name: ") print("Welcome to Python", name) print(type(name)) 

Output:

Enter your name: Pritha Welcome to Python Pritha <class 'str'>