python+pyechart编写数据变动的仪表和直方图

下面是一个使用Python和Pyecharts库编写数据变动的仪表和直方图的示例代码：

from random import randint
from pyecharts import Gauge, Bar
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtCore import QUrl

# 生成随机数据
value = randint(0, 100)
data = [randint(0, 100) for _ in range(10)]


class GaugeChart(QWidget):
    def __init__(self, parent=None):
        super(GaugeChart, self).__init__(parent)
        self.browser = QWebEngineView()
        layout = QVBoxLayout(self)
        layout.addWidget(self.browser)
        self.chart = Gauge("仪表盘示例", "单位（%）")
        self.chart.add("", "", value)
        self.chart.render()
        self.browser.load(QUrl.fromLocalFile(self.chart._option['renderAsImage'] + ".png"))


class BarChart(QWidget):
    def __init__(self, parent=None):
        super(BarChart, self).__init__(parent)
        self.browser = QWebEngineView()
        layout = QVBoxLayout(self)
        layout.addWidget(self.browser)
        self.chart = Bar("直方图示例", "单位（%）")
        self.chart.add("", ["data{}".format(i) for i in range(10)], data)
        self.chart.render()
        self.browser.load(QUrl.fromLocalFile(self.chart._option['renderAsImage'] + ".png"))


if __name__ == '__main__':
    app = QApplication([])
    gauge_chart = GaugeChart()
    bar_chart = BarChart()
    gauge_chart.show()
    bar_chart.show()

    # 定时器更新数据
    timer = QTimer()
    timer.timeout.connect(lambda: update_data())
    timer.start(1000)

    def update_data():
        global value, data
        value = randint(0, 100)
        data = [randint(0, 100) for _ in range(10)]
        gauge_chart.chart._option['series'][0]['data'][0]['value'] = value
        gauge_chart.chart.render()
        gauge_chart.browser.load(QUrl.fromLocalFile(gauge_chart.chart._option['renderAsImage'] + ".png"))
        bar_chart.chart._option['series'][0]['data'] = data
        bar_chart.chart.render()
        bar_chart.browser.load(QUrl.fromLocalFile(bar_chart.chart._option['renderAsImage'] + ".png"))

    app.exec_()

该示例代码创建了一个仪表盘和一个直方图，并且使用了PyQt5库中的QTimer类定时更新数据。你可以根据自己的需求进行更改和扩展。