How to Avoid GUI Freezing When Using `time.sleep` in PyQt Applications?

Alternative Methods to time.sleep in PyQt Applications

In a PyQt application, utilizing time.sleep can freeze the GUI thread, causing the application to become unresponsive during the delay. This issue prompted the need for an alternative approach.

One option is to employ QTimer. However, QTimers are designed to execute a specific function after a specified duration. To use them for pauses within the current function, a workaround is required.

An alternative solution discovered by the user involves the use of QtTest.QTest.qWait(msecs) from the PyQt4 library. This function effectively pauses the current thread for the specified number of milliseconds without freezing the GUI. It functions similarly to time.sleep while maintaining GUI responsiveness.

Therefore, when seeking a non-threaded alternative to time.sleep in PyQt, consider employing QtTest.QTest.qWait(msecs) as an effective solution that prevents GUI lock-ups.

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