[PyQt] Qt/PyQt 5.9.x. Correct way to get an "enumeration flags" to return 0?

[Phil Thompson]

On 11/07/2019 07:56, J Barchan wrote:
> On Wed, 10 Jul 2019 at 21:28, Barry Scott <barry at barrys-emacs.org> 
> wrote:
> 
>> 
>> 
>> On 10 Jul 2019, at 11:55, J Barchan <jnbarchan at gmail.com> wrote:
>> 
>> If I return QOrientations() that works, but I'm unsure if that 
>> guarantees
>> to return zero.
>> 
>> 
>> I've not tried this - not ready to update Qt yet - does this print 0 
>> to
>> confirm the value in the enum?
>> 
>> print( int( QOrientations())
>> 
>> Barry
>> 
>> 
> I confirm that int( QOrientations() ) returns 0.  Assuming that is
> consistent/deliberate and not random (which I imagine it is) I guess 
> that
> is what I will use here.
> 
> I am still a little troubled by the fact that I can convert enum to int 
> via
> int(QOrientations(enum_value)) but have trouble converting int to enum 
> via
> QOrientations(int_value).  However the latter does seem to be a PyCharm 
> IDE
> warning ("Unexpected type 'int', expected 'Orientations', 
> 'Orientation'")
> but works at run-time, so I guess it's OK even if I cannot find a 
> formula
> which works without warning.  It would be nice to see a PyQt expert
> statement on what is the correct way to handle this not-unusual
> requirement....

As you say the warning is coming from your IDE and I have no idea what 
introspection it is doing to determine exactly what types are allowed. 
As Orientation is an enum then an int is also allowed.

Phil