Prerequisite: Python Urllib module
In this article, we are going to write scripts to test whether the given page is found on the server or not with a GUI application. We need to Install Urllib Module to carry out this operation. Type this command in your terminal.
pip install urllib
Approach:
- Import urllib module.
- Read URL with urllib.request.urlopen().
- Check if Read URL gives any exception.
Implementation:
Python3
# import modulefrom urllib.request import urlopen, URLError, HTTPErrorÂ
# exception handling to# catch URL errortry:Â
except URLError as e:Â Â Â Â print("Server not found!")Â
except HTTPError as e:Â Â Â Â print("HTTP error")Â
else:Â Â Â Â print("Server found") |
Output:
Server found
Application to test the given page is found or not on the server with Tkinter: This Script combines the implementation above with a GUI.
Python3
# import modulesfrom tkinter import *from urllib.request import urlopen, URLErrorÂ
# user defined functiondef URL_check():Â Â Â Â try:Â Â Â Â Â Â Â Â html = urlopen(str(e1.get()))Â Â Â Â except URLError as e:Â Â Â Â Â Â Â Â res = "Server not found!"Â Â Â Â else:Â Â Â Â Â Â Â Â res = "Server found"Â Â Â Â result.set(res)Â
Â
# object of tkinter# and background set to light greymaster = Tk()master.configure(bg='light grey')Â
# Variable Classes in tkinterresult = StringVar()Â
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# Creating label for each informationÂ
# name using widget LabelLabel(master, text="Enter URL : ", bg="light grey").grid(row=1, sticky=W)Label(master, text="Status :", bg="light grey").grid(row=3, sticky=W)Â
# Creating label for class variableÂ
# name using widget EntryLabel(master, text="", textvariable=result,      bg="light grey").grid(row=3, column=1, sticky=W)Â
Â
e1 = Entry(master, width=50)e1.grid(row=1, column=1)Â
# creating a button using the widgetb = Button(master, text="Check", command=URL_check, bg="white")b.grid(row=1, column=2, columnspan=2, rowspan=2, padx=5, pady=5,)Â
mainloop() |
Output:
Check another URL.
