Question

tubwub.py

You are working for a software company called TubWub, which is trying to build an app which helps people locate cheap admission tickets to nearby events. The head office of TubWub is located at latitude 40.740230 degrees, longitude -73.983766degrees. As a first step towards getting your software up and running, write a program which takes as input some information about an event, and then prints out the distance from the TubWub head office to the event, along with a decision about how many tickets to buy to the event.The program should ask the user to enter:

•the latitude and longitude for the event’s location,

•a price per ticket,

•and whether or not the event is “hot” (the user will answer this question with y or n).

The program should first calculate the distance from TubWub headquarters to the event, using the follow process to calculatethe approximate distance between two locations in kilometers:

1. Calculate ∆Lat, the difference between the latitudes. Multiply by 111.048 to convert the degree difference to kilometers.

2. Calculate ∆Long, the difference between the longitudes. Multiply by 84.515 to convert the degree difference to kilometers.

3. The distance between the locations is then found√(∆Lat)2+ (∆Long)2.

(We’re assuming that the event entered is in or close to New York City, so that we can treat the Earth as essentially flat.)The program should then decide how many tickets to buy based on the following rules: no tickets should be bought if the event is more than 3 kilometers; no tickets should be purchased if the event is not“hot”; and if neither of the above applies,the number of tickets purchased should be the greatest integer such that the total price of the tickets does not exceed 150.00dollars

A sample run should look like:

Enter latitude of event: 40.768

Enter longitude of event: -73.972

Price per ticket: 60Is it hot?: y

Distance = 3.240166507609296

Buy 0 tickets

Challenge: instead of using the “Flat Earth” approximation, use spherical geometry to calculate the distance (this will require you to use an approximation for the radius of the Earth, for which you can use 6371 km). Your distances should beslightly different than my sample ones.

Answer 1

import math

latitude1 = 40.740230
longitude1 = -73.983766

# Take inputs
latitude2 = float(input('Enter latitude of event: '))
longitude2 = float(input('Enter longitude of event: '))
price = float(input('Price per ticket: '))
hot = input('Is it hot?: ')

# Calculate  ∆Lat and  ∆Long
lat = (latitude1 - latitude2) * 111.048
long = (longitude1 - longitude2) * 84.515

# Calculate distance and print
distance = math.sqrt(math.pow(lat, 2) + math.pow(long, 2))
print('Distance =', distance)

# Calculate tickets and print
tickets = 0
if hot.lower() == 'y' and distance <= 3:
    tickets = 150 // price

print('Buy', int(tickets), 'tickets')

SCREENSHOT

OUTPUT