[PyQt] How to explicitly delete a QDialog when finished with it?

J Barchan jnbarchan at gmail.com
Thu Jul 12 11:07:41 BST 2018

[I'm sorry if this has been asked before, but I have Googled and can't find

In PyQt 5, how are you supposed to actually delete a (dynamically-created)
QDialog once you are done with it, *if you cannot create it with

Existing code creates many (modal) dialogs repeatedly, usually calling
exec().  Some of the calls deliberately do *not* pass WA_DeleteOnClose
(e.g. I think some places want to access stuff in the dialog after the user
has exited it).

I get the same dialogs repeatedly created.  Investigating via
QApplication.allWidgets(), I see:

   - If a parent was specified, it does get deleted, but not till the
   parent gets deleted, which is too late (space-wise).
   - If parent was None, I'm not even sure when it does get deleted.

Either way, if I do *not* specify WA_DeleteOnClose I want to delete it
explicitly when I'm done reading its values or whatever.  In C++ I'd call
delete explicitly.  What should I do from PyQt/Python?  del??

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