Build a GUI Application to get distance between two places using Python

Last Updated : 27 Oct, 2021

Prerequisite: Tkinter

In this article, we are going to write a python script to get the distance between two places and bind it with the GUI application. To install the GeoPy module, run the following command in your terminal.

pip install geopy

Approach used:

Import the geopy module.
Initialize Nominatim API to get location from the input string.
Get latitude and longitude with geocoding ().
Get the distance with distance() method in geopy.

The GUI would look like below:

Below is the Implementation:

Python3

# import module
from geopy.geocoders import Nominatim
from geopy import distance

# initialize Nominatim API
geolocator = Nominatim(user_agent="geoapiExercises")

# place input
Input_place1 = "delhi"
Input_place2 = "patna"

# Get location of the input strings
place1 = geolocator.geocode(Input_place1)
place2 = geolocator.geocode(Input_place2)

# Get latitude and longitude
Loc1_lat, Loc1_lon = (place1.latitude), (place1.longitude)
Loc2_lat, Loc2_lon = (place2.latitude), (place2.longitude)

location1 = (Loc1_lat, Loc1_lon)
location2 = (Loc2_lat, Loc2_lon)

# display the distance
print(distance.distance(location1, location2).km, " kms")

Output:

852.5518024607962  kms

GUI Application to Measure Distance with Tkinter:

Python3

# import modules
from tkinter import *
from geopy.geocoders import Nominatim
from geopy import distance

# user defined function
def get_dis():
    try:
        
        geolocator = Nominatim(user_agent="geoapiExercises")
        
        place1 = geolocator.geocode(str(e1.get()))
        place2 = geolocator.geocode(str(e2.get()))


        Loc1_lat,Loc1_lon = (place1.latitude),(place1.longitude)
        Loc2_lat,Loc2_lon = (place2.latitude),(place2.longitude)

        location1=(Loc1_lat,Loc1_lon)
        location2=(Loc2_lat,Loc2_lon)

        res = (str(distance.distance(location1, location2).km)+" Km")

        result.set(res)
    except:
        result.set("something went wrong")

# object of tkinter
# with background set to light grey
master = Tk()
master.configure(bg='light grey')
master.title("Find Distance")

# Variable Classes in tkinter
result = StringVar();


# Creating label for each information
# name using widget Label 
Label(master, text="Enter first place : " , bg = "light grey").grid(row=1, sticky=W)
Label(master, text="Enter second place : " , bg = "light grey").grid(row=2, sticky=W)

Label(master, text="Result :", bg = "light grey").grid(row=3, sticky=W)

# Creating label for class variable
# name using widget Entry
Label(master, text="", textvariable=result,bg = "light grey").grid(row=3,column=1, sticky=W)


e1 = Entry(master,width = 50)
e1.grid(row=1, column=1)
e2 = Entry(master,width = 50)
e2.grid(row=2, column=1)

# creating a button using the widget  
b = Button(master, text="Check", command=get_dis, bg = "white")
b.grid(row=1, column=2,columnspan=2, rowspan=2,padx=5, pady=5,)

mainloop()