No module named PyQt5.QtWidgets in Maya 2018

Question

Executing this code in Maya 2018 I've got an error:

# Error: ImportError: file <maya console> line 3: No module named PyQt5.QtWidgets #

Isn't PyQt5 a part of Maya 2018?

import maya.cmds as cmds
import sys 
from PyQt5.QtWidgets import (QWidget, QToolTip, QPushButton) 
from PyQt5.QtGui import QFont     

class Example(QWidget):
    def __init__(self):
        super(Example,self).__init__()
        self.initUI()

    def initUI(self):
        QToolTip.setFont(QFont('SansSerif', 10))
        self.setToolTip('This is a <b>QWidget</b> widget')
        btn = QPushButton('Button', self)
        btn.setToolTip('This is a <b>QPushButton</b> widget')
        btn.resize(btn.sizeHint())
        btn.move(50, 50) 
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Tooltips')
        self.show()

ex = Example() 

Answer 1

Qt is part of Maya, but if you want to use PyQt5 you need to build it. Be careful, you need to build it against maya’s modified version of Qt.

pyQt5 instruction for maya