If input is empty or zero it should get None.

This is what has been attempted:

The int is necessary.

number = int(input('Type an integer: ') or None )
number = number if number != 0 else None 
print(number)

How to avoid this issue:

TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

CodePudding user response：

Try this code

Just change None to '0' in the line 1

So that, If the input is empty or zero, It is assigned as None

number = int(input('Type an integer: ') or '0' )
number = number if number != 0 else None 
print(number)

Tell me if its not working...

CodePudding user response：

There are three distinct operations here:

1. Read an input.
2. Convert that input to an int, if possible, or 0 if not.
3. Replace 0 with None.

Each of these should be done independently.

x = input("...")

try:
    number = int(x)
except ValueError:
    number = 0

if number == 0:
    number = None

It's not clear why 0 is so special that it should be replaced with a value of a different type.

CodePudding user response：

You can use try-except

try:
    number = int(input('Type an integer: '))
    if number == 0:
        number = None 
except ValueError:
    number = None
print(number)