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from PyQt5 import QtGui

from PyQt5.QtCore import *

from PyQt5.QtWidgets import *

from PyQt5.QtChart import QPieSlice, QChart, QChartView, QPieSeries

import numpy as np

import sys

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class PyQt543(QMainWindow):

??? def __init__(self):

??????? super().__init__()

??????? self.initUI()

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??? def initUI(self):

??????? self.setWindowTitle("chart")

??????? self.resize(600, 400)?????????????????????????? # 設(shè)置窗口大小

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???? ???cityName = ['北京', '天津', '上海', '南京', '杭州',

??????????????????? '青島', '廣州', '深圳', '重慶', '成都']

??????? color??? = ['#6495ED', '#548B54', '#483D8B', '#00FF7F', '#7B68EE',

??????????????????? '#00CD66', '#556B2F', '#EEDC82', '#FFD700', '#CD950C']

??????? gdpData? = np.array([30319.98, 18809.64, 32679.87, 12820.4, 13509.15,

??????????????????? 12001.52, 22859.35, 24221.98, 20363.19, 15342.77])

??????? proportion = np.array( gdpData * 100 / gdpData.sum(),dtype=int )

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??????? chart = QChart()???????????????? ???????????????# 圖表組件

??????? chart.setTitle('GDP餅狀圖')

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??????? series = QPieSeries()?????????????????????????? # 餅狀圖

??????? for i, value in enumerate(gdpData):???????????? # 添加數(shù)據(jù)

??????????? series.append(cityName[i], proportion[i])

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??????? slice = QPieSlice()???????????????????????????? # 餅狀圖中的切片

??????? for i, city in enumerate(cityName):

??????????? slice = series.slices()[i]

??????????? slice.setLabelVisible(True)???????????????? # 切片標(biāo)簽可視

??????????? slice.setLabel("{} {:.1f}%".format(city,100 * slice.percentage()))

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??????????? slice.setBrush(QtGui.QColor(color[i]))

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??????? slice0 = series.slices()[4]

??????? slice0.setExploded()??????????????????????????? # 切片強(qiáng)調(diào)

???????

??????? chart.legend().hide()

??????? chart.addSeries(series)???????????????? ????????# 添加Series

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??????? chartView = QChartView()??????????????????????? # 視圖組件

??????? chartView.setChart(chart)?????????????????????? # 顯示chart

???????

??????? self.setCentralWidget(chartView)

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??????? self.show()

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if __name__ == '__main__':

??? app = QApplication(sys.argv)

??? window = PyQt543()

??? sys.exit(app.exec())

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執(zhí)行結(jié)果