def deliver_package(self, package, address_street, address_distance, packages):
"""
Deliver package, adjust the truck's time and mileage, and record package statuses
Check package delivery status attribute to make sure it is 'In Transit"
Remove package from truck's 'packages_on_truck' list and Decrement 'number_of_packages' on truck by 1
Calculate the distance needed to travel to deliver package - calculate_travel_distance()
Add distance needed to travel to truck's total mileage
Calculate the time needed to travel distance - calculate_travel_time()
Record deliver time by setting package.actual_delivery_time to current time
Display package id, destination address, distance, travel time and truck num to console
Change truck's location to the destination addresses's location code
Update package's status to show its been delivered (3 = "Delivered")
Add snapshot of the status of all packages to status_log - Helper.add_to_status_log()
"""
# ensure package is not at the hub
if package.delivery_status == "In transit":
# remove package from truck
self.packages_on_truck.remove(package)
# decrease truck's package count
self.num_of_packages -= 1
# calculate travel distance
distance = self.calculate_travel_distance(package.address, address_street, address_distance)
# updates truck's total mileage
self.miles_traveled = float('%.1f' % (self.miles_traveled + distance))
# calculate travel time
travel_time = self.calculate_travel_time(distance)
# update trucks time to delivery time
self.clock += timedelta(minutes=travel_time)
# set package's delivery time
package.actual_delivery_time = self.clock.strftime("%-I:%M:%S")
print("\n\n DESTINATION: " + package.address +
" DISTANCE: " + str(distance) + " miles " +
" TRAVEL TIME: " + str(travel_time) + " minutes")
print("Package " + package.ID + " delivered and unloaded from [ TRUCK " + str(self.truck_number) + " ] at "
+ str(package.actual_delivery_time))
# Change truck's current location
self.current_location = address_street[package.address]
# change package's delivery status to 'delivered'
package.set_delivery_status(3)
# set Helper.clock time
Helper.clock = self.clock
Helper.add_to_status_log(self.clock, packages)
else:
print("\n Package " + package.ID + " is not on truck " + str(self.truck_number))
