# How to create a weather application using python

# Introduction 
Weather applications are used to find weather conditions in a certain region.
In this blog, we are gonna see how to create a weather application using python

# Abstract
To create a weather application using python

# How this application works 
First, it gets city information from the user then it will send API request to open the weather map. 

# How to get an open weather map API key
First, we have to visit => https://openweathermap.org/api . Then we have register a account . Then we have to go to =>https://openweathermap.org/price . Then get a free API key.

# Headers

```
from tkinter import *
from PIL import ImageTk,Image
import requests
import json
import urllib.request
``` 
Tkinter is used for Graphical user interface
PIL is used for images
Requests is used for downloading information
JSON is used to extract json data
Urllib is used for api request

# Function

```
def weather():
    global la
    global img1
    global mylabe0
    global glcolor
    mylabe0.grid_forget()
    
    api_request=requests.get("http://api.openweathermap.org/data/2.5/weather?q="+e.get()+"&appid=<<INSERT API KEY HERE>>")
    api=json.loads(api_request.content)
    icondata=api['weather'][0]['icon']
    path="C:/Users/New/Desktop/python projects/weather app/w1.png"
    urllib.request.urlretrieve("http://openweathermap.org/img/w/"+icondata+".png",path)
    img=Image.open("w1.png")
    resized=img.resize((120,120),Image.ANTIALIAS)
    img1=ImageTk.PhotoImage(resized)
    la=Label(image=img1,bg=glcolor)
    la.grid(row=3,column=0)
    temp=str(int(api['main']['temp']-273))+"°C"
    temp_feel="Feels like:"+str(int(api['main']['feels_like']-273))+"° C"
    temp_min="Temprature min:"+str(int(api['main']['temp_min']-273))+"° C"
    temp_max="Temprature max:"+str(int(api['main']['temp_max']-273))+"° C"
    humid="Humidity:"+str(int(api['main']['humidity']))
    desc=api['weather'][0]['description']
    mylabe0=Label(root,text=desc,bg=glcolor,fg="white",font=('arial',20))
    mylabe0.grid(row=5,column=0)
    
    mylabel=Label(root,text=temp,bg=glcolor,fg="white",font=('arial',40,'bold'))
    mylabel.grid(row=4,column=0)
    mylabel1=Label(root,text=temp_feel,bg=glcolor,fg="white",font=('arial',10))
    mylabel1.grid(row=6,column=0)
    mylabel2=Label(root,text=temp_min,bg=glcolor,fg="white",font=('arial',10))
    mylabel2.grid(row=7,column=0)
    mylabel3=Label(root,text=temp_max,bg=glcolor,fg="white",font=('arial',10))
    mylabel3.grid(row=8,column=0)
    mylabel4=Label(root,text=humid,bg=glcolor,fg="white",font=('arial',10))
    mylabel4.grid(row=9,column=0)
``` 
This function will give an API request to openweather map then after receiving back the API request information then it extracts the necessary details from it and download the weather icon for the application. Then display it in the application 

# Rest of the code 

```
glcolor="green"
root=Tk()
root.configure(bg="green")
root.title("weather app")
root.iconbitmap('weather_128.ico')

img=Image.open("w1.png")
resized=img.resize((120,120),Image.ANTIALIAS)
img1=ImageTk.PhotoImage(resized)

la=Label(image=img1,bg=glcolor)
la.grid(row=3,column=0)

mylabe=Label(root,text="Enter your city name",bg=glcolor,fg="white")
mylabe.grid(row=0,column=0)
mylabe0=Label(root,text="",bg=glcolor,fg="white",font=('arial',20,'italic'))
mylabe0.grid(row=5,column=0)


e=Entry(root,width=40,bg=glcolor,fg="white")
e.grid(row=1,column=0,padx=10,pady=10)
but=Button(root,text="Enter",command=weather,bg=glcolor,fg="white")
but.grid(row=2,column=0)
root.mainloop()

``` 
First, we are having dummy image before any request as "w1.png" after any API request it will get overridden by the downloaded weather image. Labels are used to display information in the application and Entry, I used for getting information from the user.

Here is full code link:- [github](https://github.com/vasanthkumar7/weather-app-using-python)



![Screenshot (213).png](https://cdn.hashnode.com/res/hashnode/image/upload/v1650897778435/qj_M0fIkj.png)https://openweathermap.org/api