Как отобразить 2 и более графика в PyQtGraph?

from PyQt5 import Qt
import pyqtgraph as pg
import numpy as np
 
 
class Window(Qt.QWidget):
 
    def __init__(self):
        super().__init__()
 
        layout = Qt.QVBoxLayout(self)
 
        self.setGeometry(300, 100, 600, 600)
        self.setWindowTitle('Программа')
 
        self.view = view = pg.PlotWidget()
        self.curve = view.plot(name="Line")
 
        self.btn = Qt.QPushButton("Random plot")
        self.btn.clicked.connect(self.random_plot)
 
        layout.addWidget(Qt.QLabel("Some text"))
        layout.addWidget(self.view)
        layout.addWidget(self.btn)
 
    def random_plot(self):
        line = [x for x in range(10)]
        lot = [x ** 2 for x in range(10)]
        self.curve.setData(line)
 
 
if __name__ == "__main__":
    app = Qt.QApplication([])
    w = Window()
    w.show()
    app.exec()

from PyQt5 import Qt
import pyqtgraph as pg
import numpy as np
 
 
class Window(Qt.QWidget):
 
    def __init__(self):
        super().__init__()
 
        layout = Qt.QVBoxLayout(self)
 
        self.setGeometry(300, 100, 600, 600)
        self.setWindowTitle('Программа')
 
        self.view = view = pg.PlotWidget()
        self.curve = view.plot(name="Line")
        self.curve2 = view.plot(name="Line2")
 
        self.btn = Qt.QPushButton("Random plot")
        self.btn.clicked.connect(self.random_plot)
 
        layout.addWidget(Qt.QLabel("Some text"))
        layout.addWidget(self.view)
        layout.addWidget(self.btn)
 
    def random_plot(self):
        line = [x for x in range(10)]
        lot = [x ** 2 for x in range(10)]
        self.curve.setData(line)
        self.curve2.setData(lot)
 
 
if __name__ == "__main__":
    app = Qt.QApplication([])
    w = Window()
    w.show()
    app.exec()