Mastering GUI Programming with Python

A non-threaded searcher

To implement a searching application, let's add a GUI form for entering a search term and displaying the search results.

Let's call it SearchForm, as follows:

class SearchForm(qtw.QWidget):    textChanged = qtc.pyqtSignal(str)    returnPressed = qtc.pyqtSignal()    def __init__(self):        super().__init__()        self.setLayout(qtw.QVBoxLayout())        self.search_term_inp = qtw.QLineEdit(            placeholderText='Search Term',            textChanged=self.textChanged,            returnPressed=self.returnPressed)        self.layout().addWidget(self.search_term_inp)        self.results = qtw.QListWidget()        self.layout().addWidget(self.results)        self.returnPressed.connect(self.results.clear)

This GUI only contains a QLineEdit widget for entering a term and a QListWidget widget for displaying ...