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script.py

def ground_shipping(weight):
  if weight <= 2:
   cost = 1.50
  elif weight <= 6:
    cost = 3.00
  elif weight <= 10:
    cost = 4.00
  else: cost = 4.75   
  return 20 + cost * weight

def drone_shipping(weight):
  if weight <= 2:
    cost = 4.50
  elif weight <= 6:
    cost = 9.00
  elif weight <= 10:
    cost = 14.25
  else: cost = 14.25
  return 0 + cost * weight

premium = 125.00

def cheapest_shipping(weight):
    drone = drone_shipping(weight)
    ground = ground_shipping(weight)

    if drone < premium and drone < ground:
     method = "drone shipment "
     cost = drone

    elif premium < drone and premium < ground:
       method = "premium shipment " 
       cost = premium

    else: 
      cost = ground 
    method = "ground shipment " 
    
    
    return method + str(cost)

print(cheapest_shipping(41.5))