Python - Using Qt5 to build a simple web browser

Question

I was trying to build this example:

https://www.linuxvoice.com/build-a-web-browser-with-20-lines-of-python/

I'll just repost it here for completeness:

from PyQt5.QtCore import QUrl 
from PyQt5.QtWidgets import QApplication 
from PyQt5.QtWebKitWidgets import QWebView 
import sys

app = QApplication(sys.argv) 
view = QWebView() 
view.show() 
view.setUrl(QUrl(“http://linuxvoice.com”)) 
app.exec()

I also used the indications here to install pyqt5

https://askubuntu.com/questions/612314/how-to-install-pyqt-for-python3-in-ubunt-14-10

and also installed Qt5. So I should have everything they say in the linuxvoice tutorial.

When I want to run this with python 2.7, it says:

 File "brows.py", line 9 SyntaxError: Non-ASCII character '\xe2' in file brows.py on line 9, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

and with Python3:

File "brows.py", line 9
view.setUrl(QUrl(“http://linuxvoice.com”)) 
SyntaxError: invalid character in identifier

Did anyone manage to make this work?

SOLVED: Basically I was missing these packages stackoverflow.com/questions/30734287/… — Qubix
– Qubix, Commented Feb 8, 2016 at 20:10

trickytype · Accepted Answer · 2017-06-03 03:32:57Z

3

SO here's the actual answer. I had the same issue and discovered it very fast. view.setUrl(QUrl(“http://linuxvoice.com”)) Notice that their code uses quotes, look at how the quotes are compared to normal quotes.

Normal: ""

Theirs: “”

Basically, they're using weird ASCII quotes that Python can't handle. Really sneaky way to prevent copy-pasters. Either way this code doesn't work anymore because in the most recent version of PyQt5, QtWebKitWidgets was removed.

answered Jun 3, 2017 at 3:32

trickytype

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Community · Accepted Answer · 2017-05-23 11:46:46Z

0

You've got a stray byte somewhere in your code. It's popped up on StackOverflow previously and there's a good method for finding it: Python "SyntaxError: Non-ASCII character '\xe2' in file".

edited May 23, 2017 at 11:46

CommunityBot

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answered Feb 8, 2016 at 9:58

Nicholas Smith

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4 Comments

Qubix Over a year ago

So I solve that, now both of them point to the http saying invalid character in identifier.

Nicholas Smith Over a year ago

Did you copy the code from elsewhere? If so it might have hidden webformatting bytes, try just deleting the line and recoding it from scratch.

Qubix Over a year ago

I rewrote everything. I still get: File "brows.py", line 10 app.exec() ^ SyntaxError: invalid syntax

ekhumoro Over a year ago

@Qubix. You need to use app.exec_() in pyqt, because exec is a keyword in python2. The non-ascii characters are the left/right double quotation marks (“”), which are often used in web pages rather than the standard double quotes (").

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