Building a minimal browser in ~40 lines of code

``` from PyQt5.QtWidgets import QApplication, QMainWindow, QToolBar, QLineEdit, QAction from PyQt5.QtWebEngineWidgets import QWebEngineView from PyQt5.QtCore import QUrl import sys class Browser(QMainWindow): def __init__(self): super().__init__() self.browser = QWebEngineView() self.browser.setUrl(QUrl("https://google.com")) self.setCentralWidget(self.browser) navbar = QToolBar() self.addToolBar(navbar) back = QAction("←", self) back.triggered.connect(self.browser.back) navbar.addAction(back) forward = QAction("→", self) forward.triggered.connect(self.browser.forward) navbar.addAction(forward) self.url_bar = QLineEdit() self.url_bar.returnPressed.connect(self.navigate) navbar.addWidget(self.url_bar) self.browser.urlChanged.connect(lambda q: self.url_bar.setText(q.toString())) def navigate(self): url = self.url_bar.text() if not url.startswith("http"): url = "https://" + url self.browser.setUrl(QUrl(url)) app = QApplication(sys.argv) window = Browser() window.show() sys.exit(app.exec_()) ```