ModuleNotFoundError: No module named 'layout_colorwidget'

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Paul_Fishback | 2021-04-28 19:18:24 UTC | #1

Running PyQt6 on a Mac (Big Sur 11.2.3) with Atom 155.0 as my IDE.

Trying to replicate the example on p. 71 of the book (PyQt6 edition):

python
import sys
from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QApplication, QMainWindow, QVBoxLayout,QWidget
from layout_colorwidget import Color

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("My App")
        layout = QVBoxLayout()
        layout.addWidget(Color("red"))
        layout.addWidget(Color("green"))
        layout.addWidget(Color("blue"))
        widget = QWidget()
        widget.setLayout(layout)
        self.setCentralWidget(widget)

app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec()

Obtain error message, "ModuleNotFoundError: No module named 'layout_colorwidget'"


martin | 2021-04-28 19:18:11 UTC | #2

Hi @Paul_Fishback welcome to the forum!

The code for the layout_colorwidget file is given in the previous code block -- this needs to be saved to a separate file with the name layout_colorwiget.py so it can be imported. This isn't exactly clear, so I need to improve this.

Create GUI Applications with Python & Qt6 by Martin Fitzpatrick — (PyQt6 Edition) The hands-on guide to making apps with Python — Over 15,000 copies sold!

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You can also find the file in the source code downloads with the book, in the same folder with the layout examples.

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Martin Fitzpatrick

ModuleNotFoundError: No module named 'layout_colorwidget' was written by Martin Fitzpatrick .

Martin Fitzpatrick has been developing Python/Qt apps for 8 years. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Starting with Tk, later moving to wxWidgets and finally adopting PyQt. Martin founded PythonGUIs to provide easy to follow GUI programming tutorials to the Python community. He has written a number of popular Python books on the subject.