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QtWebkit deprecated as of Qt5.6 #195

Crypta-Eve opened this Issue Mar 15, 2018 · 4 comments


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Crypta-Eve commented Mar 15, 2018

Im having trouble getting pywebview to work as I am using Qt 5.10, however this does not contain QtWebkit anymore. QtWebkit was deprecated in Qt5.5 and removed in 5.6.

Is there any chance of an update to QtWebEngine?


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Crypta-Eve commented Mar 15, 2018

Hmmm. I got ahead of myself submitting this issue... Kinda...

I can see the code that detects QtVersion and loads the appropriate module(WebKit or WebEngine) but for some reson mine is trying to load QtWebKit despite having Qt5.10......


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Crypta-Eve commented Mar 15, 2018

Python 3.6.3 (default, Oct 3 2017, 21:45:48)
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

import webview
webview.create_window("It works, Jim!", "")
ERROR:webview:GTK cannot be loaded
Traceback (most recent call last):
File "/home/michael/.local/lib/python3.6/site-packages/webview/", line 76, in _initialize_imports
import webview.gtk as gui
File "/home/michael/.local/lib/python3.6/site-packages/webview/", line 19, in
gi.require_version('WebKit', '3.0')
File "/usr/lib/python3/dist-packages/gi/", line 118, in require_version
raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace WebKit not available
ERROR:webview.qt:PyQt5 or one of dependencies is not found
Traceback (most recent call last):
File "/home/michael/.local/lib/python3.6/site-packages/webview/", line 29, in
from PyQt5.QtWebKitWidgets import QWebView
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'
Segmentation fault (core dumped)


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shivaprsdv commented Mar 15, 2018

This is a bug in the current production code (pywebview 1.8). The problem is
with this line in webview/

 26     if float(QT_VERSION_STR[:3]) > 5.5:

For Qt versions 5.10+, this wrongly evaluates to 5.1 > 5.5 and pywebview is
mistaken that your Qt version is below 5.5.

This was mentioned in issue #171 and rectified in PR #172. Your issue is likely
to be solved if you use the current master branch instead of the pip installed
one. The fix would be upstream in the next release. 🙂


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Crypta-Eve commented Mar 16, 2018

Awesome thanks for your help. I will mark this as closed to reflect the code in master.

@Crypta-Eve Crypta-Eve closed this Mar 16, 2018

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