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Rapid GUI Programming with Python and Qt: The Definitive Guide to PyQt Programming by Mark Summerfield

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4. Introduction to GUI Programming

In this chapter we begin with brief reviews of three tiny yet useful GUI applications written in PyQt. We will take the opportunity to highlight some of the issues involved in GUI programming, but we will defer most of the details to later chapters. Once we have a feel for PyQt GUI programming, we will discuss PyQt’s “signals and slots” mechanism—this is a high-level communication mechanism for responding to user interaction that allows us to ignore irrelevant detail.

Although PyQt is used commercially to build applications that vary in size from hundreds of lines of code to more than 100 000 ...

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