QT RangeWidge Error

[ChengDaHaI]

Hi,

My GNU Radio version is 3.8. My python version is 3.8.2. My OS is Ubuntu 20.04.

I installed GNU Radio by:

sudo add-apt-repository ppa:gnuradio/gnuradio-releases
sudo apt-get update
sudo apt install gnuradio

When i first run a sample rate demo, i got the following error:

self._snr_win = RangeWidget(self._snr_range, self.set_snr, 'snr', "counter_slider", float, QtCore.Qt.Horizontal)
TypeError: __init__() takes from 5 to 6 positional arguments but 7 were given

I solve the error by manually removing the latest parameter QtCore.Qt.Horizontal. Some guys said that results from my previous installed GNU Radio (master branch, version 3.9 ). But i have removed the old gnu radio by

sudo apt-get remove --auto-remove gnuradio
sudo apt-get purge --auto-remove gnuradio  

It doesn't help.

Any idea about how to solve the problem?

[Paul-G8DVO]

Did same update to 3.8 using PPA and got same problem
Seems to be a missing line to import QtCore in file:
/usr/share/gnuradio/grc/blocks/qtgui_range.block.yml

open file (eg sudo gedit <location/filename>) and edit imports to:
imports: |-
from gnuradio.qtgui import Range, RangeWidget
from PyQt5 import QtCore

[ChengDaHaI]

Did same update to 3.8 using PPA and got same problem
Seems to be a missing line to import QtCore in file:
/usr/share/gnuradio/grc/blocks/qtgui_range.block.yml

open file (eg sudo gedit <location/filename>) and edit imports to:
imports: |-
from gnuradio.qtgui import Range, RangeWidget
from PyQt5 import QtCore

It works for me! Thank you very much!