Primarily I would also suggest doing IO blocking operations in a QThread, which
can signal when it has finished as well.
The reason it freezes your UI is because although it calls append on the text
widgets, the eventloop will not get a chance to flush those requests until
control leaves the for loop. They just stack up until then. If its a loop of a
bunch of very fast operations, you could also stick a processEvents call in
there:
app = QtGui.QApplication.instance()
for i in aRange:
some_operation()
app.processEvents()
But if each operation is not quick then you should still use a QThread
On Sep 25, 2012, at 11:59 PM, Panupat Chongstitwattana <[email protected]>
wrote:
> Ah Threading works. Thanks. I'll have to study more about it :)
>
> Thanks
>
>
> On Wed, Sep 26, 2012 at 1:17 PM, zhang jian <[email protected]> wrote:
>> you should launch the operation in a separate thread, and send signal to ui
>> after each copy.
>>
>> zhang
>>
>> On Wed, Sep 26, 2012 at 1:29 PM, Panupat Chongstitwattana
>> <[email protected]> wrote:
>>> Using Python to loop copy lots of files. While copying, I tell PyQt to
>>> append feedback to QTextEdit
>>>
>>> for scr in sources:
>>> shutil.copy(src, dst)
>>>
>>>
>>>
>>> self.feedback.append("Copying " + src)
>>>
>>> self.feedback is a QTextEdit
>>>
>>> When I start my script, PyQt would frozen up until all the copies are
>>> completed before displaying everything back to be all at once.
>>>
>>> How can I make it so that each feedback are shown back to me in real time
>>> as the files are being copied?
>>>
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