In this chapter, we have familiarized ourselves with the tabbed view, size policy, and the grid layout of PySide2. Then, we also learned how to test Qt applications. Next, we started to build a desktop cryptocurrency wallet. We divided the application into many parts: the blockchain, the thread, the widget, the identicon tool, and the test. The blockchain part of the cryptocurrency wallet is based on the web3 and Populus libraries and its purpose is to read and create transactions in the blockchain. The thread is a middleman between the UI part and the blockchain object when creating a transaction. The identicon tool is used to create an avatar image based on a specific string (usually the address of the account or the token smart contract's address). The widget part is a tabbed widget that has three tabs. The first tab is the account widget, the second tab is the...
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