对于这种情况，您可以创建一个使用Place Autocomplete发出请求的自定义模型，并将该模型设置为QCompleter：
import jsonfrom PyQt5 import QtCore, QtGui, QtWidgets, QtNetworkAPI_KEY = "<API_KEY>"class SuggestionPlaceModel(QtGui.QStandardItemModel): finished = QtCore.pyqtSignal() error = QtCore.pyqtSignal(str) def __init__(self, parent=None): super(SuggestionPlaceModel, self).__init__(parent) self._manager = QtNetwork.QNetworkAccessManager(self) self._reply = None @QtCore.pyqtSlot(str) def search(self, text): self.clear() if self._reply is not None: self._reply.abort() if text: r = self.create_request(text) self._reply = self._manager.get(r) self._reply.finished.connect(self.on_finished) loop = QtCore.QEventLoop() self.finished.connect(loop.quit) loop.exec_() def create_request(self, text): url = QtCore.QUrl("https://maps.googleapis.com/maps/api/place/autocomplete/json") query = QtCore.QUrlQuery() query.addQueryItem("key", API_KEY) query.addQueryItem("input", text) query.addQueryItem("types", "geopre") query.addQueryItem("language", "en") url.setQuery(query) request = QtNetwork.QNetworkRequest(url) return request @QtCore.pyqtSlot() def on_finished(self): reply = self.sender() if reply.error() == QtNetwork.QNetworkReply.NoError: data = json.loads(reply.readAll().data()) if data['status'] == 'OK': for prediction in data['predictions']: self.appendRow(QtGui.QStandardItem(prediction['description'])) self.error.emit(data['status']) self.finished.emit() reply.deleteLater() self._reply = Noneclass Completer(QtWidgets.QCompleter): def splitPath(self, path): self.model().search(path) return super(Completer, self).splitPath(path)class Widget(QtWidgets.QWidget): def __init__(self, parent=None): super(Widget, self).__init__(parent) self._model = SuggestionPlaceModel(self) completer = Completer(self, caseSensitivity=QtCore.Qt.CaseInsensitive) completer.setModel(self._model) lineedit = QtWidgets.QLineEdit() lineedit.setCompleter(completer) label = QtWidgets.QLabel() self._model.error.connect(label.setText) lay = QtWidgets.QFormLayout(self) lay.addRow("Location: ", lineedit) lay.addRow("Error: ", label)if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) w = Widget() w.resize(400, w.sizeHint().height()) w.show() sys.exit(app.exec_())
