February 2019
Intermediate to advanced
450 pages
9h 59m
English
Content preview from Hands-On Blockchain for Python Developers
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Building the GUI frontend for the Twitter–like application
Now let's build a decentralized GUI application. Name the script twitter_dapp.py. Refer to the code file in the following GitLab link for the full code: https://gitlab.com/arjunaskykok/hands-on-blockchain-for-python-developers/blob/master/chapter_07/dapp/twitter_dapp.py:
from PySide2 import QtCore, QtWidgetsimport web3from web3 import Web3, HTTPProviderfrom populus.utils.wait import wait_for_transaction_receiptw3 = Web3(HTTPProvider('http://localhost:7545'))......if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) twitter_dapp = TwitterDapp() twitter_dapp.show() sys.exit(app.exec_())
Let's dissect this script line by line. Here, we import the necessary classes ...
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