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main.py

import requests
from tkinter import *
import io
from PIL import ImageTk, Image
from urllib.request import urlopen

root=Tk()

root.title("Weather Widget By IT Simplified")
root.resizable(0,0)
root.wm_attributes('-topmost',1)
root.geometry("375x150")

#main area display
info = StringVar()

weather = Message(root, textvariable = info, width = 200)   
info.set("What's your weather?")            
weather.grid(row=1, column=1)

image_address = 'http://openweathermap.org/img/w/13n.png'
image_open = urlopen(image_address)
image_file = io.BytesIO(image_open.read())
image_png = Image.open(image_file)
image_tk = ImageTk.PhotoImage(image_png.convert("RGB"))
label_img = Label(root,image=image_tk)
label_img.grid(row=1, column=2)


#function that gets weather
def getWeather():
    #Replace YOURAPIKEYHERE with the API key you obtain by signing up at https://openweathermap.org/
    api_address = 'http://api.openweathermap.org/data/2.5/weather?appid=YOURAPIKEYHERE&units=imperial&zip='
    country_code = ',us'
    zip_code = e.get()
    
    url = api_address + zip_code + country_code
    json_data = requests.get(url).json()
    
    if 'message' in json_data:
        info.set('Invalid zip code.')
    
    else:
        city = json_data['name']
        description = json_data['weather'][0]['description'] 
        icon = json_data['weather'][0]['icon']
        temperature = str(json_data['main']['temp']) + u'\u00b0' + " F"
    
        info.set(city + "\n" + description + "\n" + temperature)
        
        #now prep image
        image_main = 'http://openweathermap.org/img/w/'
        image_address = image_main + str(icon) + '.png'
        image_open = urlopen(image_address)
        image_file = io.BytesIO(image_open.read())
        image_png = Image.open(image_file)
        image_tk2 = ImageTk.PhotoImage(image_png.convert("RGB")) 
        label_img.configure(image=image_tk2)    
        label_img.image = image_tk2 


label=Label(root,text='Enter your zip code:  ')
label.grid(row=3, column=1, sticky='E')

e=Entry(root)
e.grid(row=3, column=2)

sub = Button(root,text='Get Weather', command = getWeather)
sub.grid(row=4, column=2)

root.mainloop()