In this section we will look at rich text editing from two different perspectives. In the first subsection we will create a plain text editor that uses QSyntaxHigh-lighter to provide syntax highlighting for Python source code. In the second subsection we will create a single-line rich text editor similar to QLineEdit, that has pop-up menus, and that supports various formatting shortcuts such as Ctrl+B and Ctrl+I to toggle bold and italic on and off. In both cases, we use QText-Edit as the foundation on which we build.
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