PyQt5：未安装模块“QtCharts”

Question

I'm trying to use QtCharts from QML in a PyQt5 app.

Qt5 is installed via HomeBrew, and the QtCharts module appears to be installed (unless when called via PyQt5 it looks somewhere else):

$ ls -1 /usr/local/opt/qt5/qml/QtCharts
designer
libqtchartsqml2.dylib
plugins.qmltypes
qmldir

In PyQt5, I can run a QtQuick app without problems, but if I try to import QtCharts 2.2 I get an error:

module "QtCharts" is not installed

Minimal testcase that exhibits this problem:

test_qml_qtcharts.py

import sys
from PyQt5.QtCore import QCoreApplication, QUrl
from PyQt5.QtQml import QQmlComponent, QQmlEngine

app = QCoreApplication(sys.argv)
engine = QQmlEngine()
component = QQmlComponent(engine)
component.setData(b'''
import QtQuick 2.9
import QtCharts 2.2
Item {}
''', QUrl('main.qml'))
instance = component.create()

if not instance:
    for error in component.errors():
        print(error.toString())

Output:

$ python3 test_qml_qtcharts.py
QQmlComponent: Component is not ready
main.qml:3:1: module "QtCharts" is not installed

Removing import QtCharts 2.2 the test runs fine.

Answer 1

I was wrong assuming it would look into the system's Qt5 installation.

Solution: install PyQtChart via pip:

python3 -m pip install PyQtChart