PYTHON ONLY! PLEASE FOLLOW DIRECTIONS! DIRECTIONS: import math import stdio impo

Question

PYTHON ONLY! PLEASE FOLLOW DIRECTIONS!

DIRECTIONS:

import math
import stdio
import sys

class Location:
"""
Represents a location on Earth.
"""

def __init__(self, lat, lon):
"""
Constructs a new location given its latitude and longitude values.
"""

self._lat = ...
self._lon = ...

def distanceTo(self, other):
"""
Returns the great-circle distance between self and other.
"""

...

def __str__(self):
"""
Returns a string representation of self.
"""

...

# Test client [DO NOT EDIT]. Reads floats lat1, lon1, lat2, lon2 from command
# representing two locations on Earth, constructs two Location objects from
# them, and writes them along with the great-circle distance between the two.
def _main():
lat1, lon1, lat2, lon2 = map(float, sys.argv[1:])
loc1 = Location(lat1, lon1)
loc2 = Location(lat2, lon2)
stdio.writeln('loc1 = ' + str(loc1))
stdio.writeln('loc2 = ' + str(loc2))
stdio.writeln('d(loc1, loc2) = ' + str(loc1.distanceTo(loc2)))

if __name__ == '__main__':
_main()

Problem 1. (Geo Location) Define a data type Location in location.py that represents a location on Earth using its latitude and longitude. The data type must support the following API method description Location (lat, lon) a new location l from the given latitude and longitude values the le distance between l and m distance To (m) the string representation of l as (lat, lon) str(1) t See Problem 7 from Project 2 for the great-circle distance formula. python location .py 48.87 2.33 37.8 122.4 loci (48.87 2.33) loc (37.8 122.4) d (loci loc2) a 8701.38954324

Explanation / Answer

import math
import stdio
import sys

class Location:
"""
Represents a location on Earth.
"""
def __init__(self, lat, lon):
"""
Constructs a new location given its latitude and longitude values.
"""
self._lat = lat
self._lon = lon
def distanceTo(self, other):
"""
Returns the great-circle distance between self and other.
"""
# convert decimal degrees to radians
lat1 = self._lat
lat2 = other._lat
lon1 = self._lon
lon2 = other._lon
  
lon1, lat1, lon2, lat2 = map(math.radians, [lon1, lat1, lon2, lat2])
# haversine formula
dlon = lon2 - lon1
dlat = lat2 - lat1
a = math.sin(dlat/2)**2 + math.cos(lat1) * math.cos(lat2) * math.sin(dlon/2)**2
c = 2 * math.asin(math.sqrt(a))
km = 6360 * c
return km
def __str__(self):
"""
Returns a string representation of self.
"""
return "(" + "{0:.2f}".format(self._lat) + ", " + "{0:.2f}".format(self._lon) + ")"

# Test client [DO NOT EDIT]. Reads floats lat1, lon1, lat2, lon2 from command
# representing two locations on Earth, constructs two Location objects from
# them, and writes them along with the great-circle distance between the two.
def _main():
lat1, lon1, lat2, lon2 = map(float, sys.argv[1:])
loc1 = Location(lat1, lon1)
loc2 = Location(lat2, lon2)
print('loc1 = ' + str(loc1))
print('loc2 = ' + str(loc2))
print('d(loc1, loc2) = ' + str(loc1.distanceTo(loc2)))
stdio.writeln('loc1 = ' + str(loc1))
stdio.writeln('loc2 = ' + str(loc2))
stdio.writeln('d(loc1, loc2) = ' + str(loc1.distanceTo(loc2)))
if __name__ == '__main__':
_main()

#code link: https://paste.ee/p/1dHcT

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