PyQt5 QAreaChart demo1.py

import sys
from PyQt5.QtWidgets import (QApplication)
from PyQt5.QtChart import QChart, QLineSeries, QAreaSeries, QChartView
from PyQt5.QtGui import QPen, QLinearGradient, QColor
from PyQt5.QtCore import QPointF
from PyQt5.Qt import QGradient, Qt, QPainter

app = QApplication([])

upperSeries = QLineSeries()
lowerSeries = QLineSeries()

x = [x for x in range(1, 20, 2)]
y1 = [5, 7, 6, 7, 5, 7, 5, 4, 7, 5]
y2 = [3, 4, 2, 5, 3, 5, 2, 1, 4, 2]

for i in range(len(x)):
	upperSeries.append(x[i], y1[i])
	lowerSeries.append(x[i], y2[i])

series = QAreaSeries(upperSeries, lowerSeries)

pen = QPen(Qt.red)
pen.setWidth(3)
series.setPen(pen)

gradient = QLinearGradient(QPointF(0, 0), QPointF(0, 1))
gradient.setColorAt(0.0, QColor(255, 255, 255))
gradient.setColorAt(1.0, QColor(0, 255, 0))
gradient.setCoordinateMode(QGradient.ObjectBoundingMode)
series.setBrush(gradient)

chart = QChart()
chart.addSeries(series)
chart.setTitle('Simple Area Chart')
chart.legend().hide()
chart.createDefaultAxes()
chart.axes(Qt.Horizontal)[0].setRange(0, 20)
chart.axes(Qt.Vertical)[0].setRange(0, 10)

chartView = QChartView(chart)
chartView.setWindowTitle('Area Chart')
chartView.resize(800, 600)
chartView.show()

app.exec_()