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Tkinter GUI Programming by Example

You're reading from   Tkinter GUI Programming by Example Learn to create modern GUIs using Tkinter by building real-world projects in Python

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Product type Paperback
Published in Apr 2018
Publisher Packt
ISBN-13 9781788627481
Length 340 pages
Edition 1st Edition
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Author (1):
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David Love David Love
Author Profile Icon David Love
David Love
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Toc

Table of Contents (13) Chapters Close

Preface 1. Meet Tkinter 2. Back to the Command Line – Basic Blackjack FREE CHAPTER 3. Jack is Back in Style – the Blackjack GUI 4. The Finishing Touches – Sound and Animation 5. Creating a Highly Customizable Python Editor 6. Color Me Impressed! – Adding Syntax Highlighting 7. Not Just for Restaurants – All About Menus 8. Talk Python to Me – a Chat Application 9. Connecting – Getting Our Chat Client Online 10. Making Friends – Finishing Our Chat Application 11. Wrapping Up – Packaging Our Applications to Share 12. Other Books You May Enjoy

Creating the Requester class


Make yourself a new file in the same folder as your friendslist.py file named requester.py:

import json
import requests

class Requester:
    def __init__(self):
        self.url = "http://127.0.0.1:5000"

As the name implies, the Requester class will be making use of the requests module to communicate with our web service. We will also need to use the json module to read any data which is returned.

In our __init__, we just need to keep a reference to the URL at which our web service operates. Keeping it here means that, if we change it for any reason, we only have one place in this class to update.

Since our web service uses both GET and POST endpoints, we can generalize our requesting by extracting it to a method:

def request(self, method, endpoint, params=None):
    url = self.url + endpoint

    if method == "GET":
    r = requests.get(url, params=params)
        return r.text
    else:
        r = requests.post(url, data=params)

        return r.json()

This method...

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