Clear the screen with the running Python interpreter.
...as a function
def clear_screen(): import os; os.system('cls' if os.name=='nt' else 'clear')
...as a lambda expression with explicit import statement
import os
clear_screen = lambda: import os; os.system('cls' if os.name=='nt' else 'clear') or None
...without explicit import statement
clear_screen = lambda: __import__('os').system('cls' if __import__('os').name=='nt' else 'clear') or None