"""
Represents an electric device that can be plugged into an Outlet to receive power.
"""
class Device:

"""
Assigns all non-self parameters to fields of the same name
"""
def __init__(self, name, watts=100, on=False):
   self.name = name
   self.watts = watts
   self.on = on

"""
Returns a str that follows these patterns.
"""
def __str__(self):
   if self.on:
         return "(+" + str(self.watts) + "W: " + self.name + ")"
   else:
         return "(+0W: " + self.name + ")"

"""
Returns a str that follows these patterns.
"""
def __repr__(self):
   return "Device('" + self.name + "', " + str(self.watts) + ", " + str(self.on) + ")"

"""
both parameters are Devices. Returns True when
they have identical values for all three fields,
False otherwise.
"""
def __eq__(self, other):
   if isinstance(other, Device):
         if self.name == other.name and self.watts == other.watts and self.on == other.on:
            return True
         else:
            return False
   else:
         return False

"""
Ensures the device is on.
"""
def turn_on(self):
   self.on = True

"""
Ensures the device is not on.
"""
def turn_off(self):
   self.on = False

"""
Changes the device's on status between True and False
"""
def toggle(self):
   self.on = not self.on

"""
Represents an electrical outlet (the thing you plug devices into to get electricity).
It might have some Devices plugged into it, which may be on or not.
"""
class Outlet:

"""
Ensures there's a field named devices for this object.
Uses the provided value; but if devices==None,
a new empty list is created as the value.
"""
def __init__(self, devices=None):
   if devices is None:
         self.devices = []
   else:
         self.devices = devices

"""
Returns a str that follows these patterns.
"""
def __str__(self):
   result = "Outlet(["
   for i in range(0, len(self.devices)):
         result += str(self.devices[i])
         if i < len(self.devices) - 1:
            result += ", "
   result += "])"
   return result

"""
Returns a str that follows these patterns.
"""
def __repr__(self):
   result = "Outlet(["
   for i in range(0, len(self.devices)):
         result += repr(self.devices[i])
         if i < len(self.devices

PROGRAM PROGRAM 8: STRING MANIPULATION OVERVIEW Python provides...