Bug 535 – QtPoint doesn't like numpy int64 type

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Bug 535 - QtPoint doesn't like numpy int64 type

Summary:

QtPoint doesn't like numpy int64 type

Status:	CLOSED WONTFIX

Product:	PySide
Classification:	Unclassified
Component:	PySide
Version:	HEAD
Platform:	Macintosh Mac OS

Importance:	P3 normal
Assigned To:	renato filho

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2010-12-07 15:09 EET by Daniel Ashbrook
Modified:	2010-12-20 11:26 EET (History)
CC List:	8 users (show)

See Also:

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Description Daniel Ashbrook 2010-12-07 15:09:21 EET

Numpy "casts" Python types to its own; QPointF has no problem with
numpy.float64, but QPoint doesn't like numpy.int64:

from PySide.QtCore import *
from numpy import array
a = array((1,2))
QPoint(a[0], a[1])


TypeError: 'PySide.QtCore.QPoint' called with wrong argument types:
  PySide.QtCore.QPoint(numpy.int64, numpy.int64)

Comment 1 Hugo Parente Lima 2010-12-07 15:20:57 EET

numpy.int64 is not a Python integer type subclass.

We can't add overloads for every library that creates it's own types to
represent numbers, it's just no feasible.

So the better way is to let the user to explicit cast to int before pass it to
QPoint following the Python mantra. Marking as wontfix.

Comment 2 Daniel Ashbrook 2010-12-07 15:32:00 EET

numpy.float64 doesn't appear to be a subclass of float; any idea why it works
but int64 doesn't?

Comment 3 Hugo Parente Lima 2010-12-20 11:26:14 EET

Closign bugs after release of 1.0.0 beta2.