Simple websearch -- prompt + mini-browser

websearch-prompt.py

#! /usr/bin/env python3

"""
Usage:

  websearch-prompt 'http://en.wikipedia.org/wiki/{0}'
  websearch-prompt 'http://youtube.com/results?search_query={0}'
"""

import sys
from PyQt5 import QtCore, QtGui, QtWidgets, QtWebEngineWidgets

class Prompt(QtWidgets.QDialog):
    def __init__(self, search_url):
        QtWidgets.QDialog.__init__(self)

        self.search_url = search_url

        font = QtGui.QFont('Helvetica', 50)

        self.input = QtWidgets.QLineEdit(self)
        self.input.setFont(font)
        self.input.setFixedWidth(500)
        self.input.adjustSize()

        self.input.returnPressed.connect(self.on_return_pressed)

    def on_return_pressed(self):
        self.hide()

        url     = self.search_url.format(self.input.text())
        browser = Browser(url, self)

        browser.show()

class Browser(QtWidgets.QMainWindow):
    def __init__(self, url, parent = None):
        QtWidgets.QMainWindow.__init__(self, parent)

        self.web_view = QtWebEngineWidgets.QWebEngineView()
        self.setCentralWidget(self.web_view)

        self.web_view.load(QtCore.QUrl(url))
        self.web_view.show()

if __name__ == "__main__":
    # Enable auto-hidpi (which doesn't work well for me)
    # QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling);

    search_url = sys.argv[1]
    app        = QtWidgets.QApplication(sys.argv)
    prompt     = Prompt(search_url)

    prompt.show()

    sys.exit(app.exec_())