undefined by Ouroboros Coding

undefined: A value to use as a default value to indicate an argument was absolutely not set buy the user of the method. Will not match as true to any other value but itself.

Installation

pip install undefined-oc

Import

import undefined

def print_me(value = undefined):
  if value is undefined:
    print('Please pass a value to print')
  else:
    print(value)

>>> print_me('hello, there')
hello, there
>>> print_me(None)
None
>>> print_me([])
[]
>>> print_me()
Please pass a value to print