从Pyqt5图表中获取值

from PyQt5.QtChart import QChart, QLineSeries
from PyQt5.QtGui import QPainter
from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QWidget
from PyQt5.QtCore import Qt

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        # 创建图表对象
        self.chart = QChart()

        # 添加数据系列
        series = QLineSeries()
        series.append(0, 1)
        series.append(1, 3)
        series.append(2, 2)
        self.chart.addSeries(series)

        # 设置图表视图
        chart_view = ChartView(self.chart)
        self.setCentralWidget(chart_view)

        # 获取数据值
        data_points = []
        for series in self.chart.series():
            for point in series.points():
                data_points.append((point.x(), point.y()))

        print(data_points)

class ChartView(QWidget):
    def __init__(self, chart):
        super().__init__()

        # 创建布局
        layout = QVBoxLayout()
        self.setLayout(layout)

        # 创建图表视图
        chart_view = QChartView(chart)
        chart_view.setRenderHint(QPainter.Antialiasing)
        layout.addWidget(chart_view)

if __name__ == '__main__':
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()