Python

Overloading operators in Python

class LightBulb:
  def __init__(self):
    self.switch = 'OFF'

  def __invert__(self): # <-- This operator takes no arguments
    if self.switch == 'ON':
      self.switch = 'OFF'
    elif self.switch == 'OFF':
      self.switch = 'ON'

  def __repr__(self):
    return f"LightBulb: {self.switch}"

bulb = LightBulb()
print(bulb)

print("\n Switching on Bulb \n")

~bulb # <-- Invert bulb
print(bulb)

print("\n Switching off Bulb \n")

~bulb # <-- Invert bulb
print(bulb)