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Hands-On Blockchain for Python Developers

You're reading from   Hands-On Blockchain for Python Developers Empowering Python developers in the world of blockchain and smart contracts

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Product type Paperback
Published in Jun 2024
Publisher Packt
ISBN-13 9781805121367
Length 436 pages
Edition 2nd Edition
Languages
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Author (1):
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Arjuna Sky Kok Arjuna Sky Kok
Author Profile Icon Arjuna Sky Kok
Arjuna Sky Kok
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Toc

Table of Contents (27) Chapters Close

Preface 1. Part 1:Blockchain and Smart Contract FREE CHAPTER
2. Chapter 1: Introduction to Blockchain Programming 3. Chapter 2: Smart Contract Fundamentals 4. Chapter 3: Using Vyper to Implement a Smart Contract 5. Part 2: Web3 and Ape Framework
6. Chapter 4: Using Web3.py to Interact with Smart Contracts 7. Chapter 5: Ape Framework 8. Chapter 6: Building a Practical Decentralized Application 9. Part 3: Graphical User Interface Applications
10. Chapter 7: Front-End Decentralized Application 11. Chapter 8: Cryptocurrency Wallet 12. Part 4: Related Technologies
13. Chapter 9: InterPlanetary: A Brave New File System 14. Chapter 10: Implementing a Decentralized Application Using IPFS 15. Chapter 11: Exploring Layer 2 16. Part 5: Cryptocurrency and NFT
17. Chapter 12: Creating Tokens on Ethereum 18. Chapter 13: How to Create an NFT 19. Part 6: Writing Complex Smart Contracts
20. Chapter 14: Writing NFT Marketplace Smart Contracts 21. Chapter 15: Writing a Lending Vault Smart Contract 22. Chapter 16: Decentralized Exchange 23. Part 7: Building a Full-Stack Web3 Application
24. Chapter 17: Token-Gated Applications 25. Index 26. Other Books You May Enjoy

Creating the voting GUI application

There are some aspects to the voting application, such as adding proposals, giving the right to vote, and voting action itself. But you’re going to focus on the voting process itself. You’re going to build the GUI application to vote for a proposal as a voter. To vote means to choose a proposal. So, you need a widget to choose a proposal. The best widget to do that is a combo box.

So, let’s create a script that has a combo box and a button. In addition to that, let’s add a label to the GUI application so your application has a title. This time, you want the script put inside the scripts folder inside your Ape project so that later you can integrate it with smart contract libraries. Name the script voting_gui_app.py and add the following code to it:

from ape import accounts, project
import os, sys
from PySide6 import QtWidgets
class VotingWidget(QtWidgets.QWidget):
    def __init__(self):
 ...
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