Project 11-2: Arrival Time Estimator

Receiving error "str" object has no attribute "datetime" when I am running my module. What have I missed? (screen shot of assignment followed by module commands) Thank you!

 

import datetime
from datetime import timedelta

print("Arrival Time Estimator")

#loop date/time
again = 'y'
while (again == 'y'):
   date = input("Estimated date of departure (YYY-MM-DD): ")
   time = input("Estimated time of departure (HH:MM AM/PM): ")
   datetime = date+" "+time
   departuredatetime = datetime.datetime.strptime(datetime, '%Y-%m=%d %I:%M %p')
   #miles and speed
   miles = int(input("Enter miles: "))
   speed = int(input("Enter miles per hour: "))
   #travel time
   print("Estimated time travel")
   hours = miles//speed
   minutes = round((miles%speed)/speed*60)
   #travel time
   print("Hours: ", hours)
   print("Minutes: ", minutes)
   #arrival time
   arrivaldatetime = departuredatetime + timedelta(hours=Hours, minutes=Minutes)
   arrivaldate = arrivaldatetime.strftime('%Y-%m-%d')
   arrivaltime = arr_datetime.strftime('%I:%M %p')
   print("Estimated date of arrival: ",arrivaldatetime)
   print("Estimated time of arrival: ",arrivaltime)
   again = input("Continue? (y/n): ")
print("Bye!")

Project 11-2: Arrival Time Estimator Create a program that calculates the estimated duration of a trip in hours and minutes. This should include an estimated date/time of departure and an estimated date/time of arrival. Console Arrival Time Estimator Estimated date of departure (YYYY-MM-DD): 2016-11-23 Estimated time of departure (HH:MM AM/PM): 10:30 AM Enter miles: 200 Enter miles per hour: 65 Estimated travel time Hours: 3 Minutes: 5 Estimated date of arrival: 2016-11-23 Estimated time of arrival: 01:35 PM Continue? (y/n): y Estimated date of departure (YYYY-MM-DD): 2016-11-29 Estimated time of departure (HH:MM AM/PM) : 11:15 PM Enter miles: 500 Enter miles per hour: 80 Estimated travel time Hours: 6 Minutes: 20 Estimated date of arrival: 2016-11-30 Estimated time of arrival: 05:35 AM Continue? (y/n): n Bye! Specifications For the date/time of departure and arrival, the program should use the YYYY-MM-DD format for dates and the HH:MM AM/PM format for times. Remember date and time will be a str format when input. Has to be converted to datetime # get departure date/time dep_date_str=input("Estimated date of departure (YYYY-MM-DD): ") dep_time_str=input("Estimated time of departure (HH:MM AM/PM): ") # convert str to datetime dep_str = dep_date_str + " " + dep_time_str dep_datetime = datetime.strptime(dep_str, "%Y-%m-%d %I:%M %p") For the miles and miles per hour, the program should only accept integer entries like 200 and 65. Assume that the user will enter valid data.