Python:Pickle 和 Qt (PyQT)

Python: Pickle and Qt (PyQT)(Python:Pickle 和 Qt (PyQT))

问题描述

找出为什么将 Qt 对象的实例作为 MyClass() 的属性会导致两页崩溃日志的原因非常有趣.以及如何避免它:

It would be quite entertaining to find why having an instance of Qt object as a MyClass()'s attribute causes a two pages crash log. And how to avoid it:

import sys, os, pickle
from PyQt4 import QtGui

class MyClass(object):
    def __init__(self):
        self.myQtWidget=QtGui.QPushButton() 
        pass 

app = QtGui.QApplication(sys.argv)
myInstance=MyClass()
pickle.dump( myInstance, open( "save.mydata", "wb" ) )

推荐答案

来自 docs:

以下 PyQt4 类可能会被腌制.

The following PyQt4 classes may be pickled.

QByteArray
QChar
QColor
QDate
QDateTime
QKeySequence
QLatin1Char
QLatin1String
QLine
QLineF
QMatrix
QPoint
QPointF
QPolygon
QRect
QRectF
QSize
QSizeF
QString
QTime

也可以腌制所有命名的枚举(例如 QtCore.Qt.Key).

Also all named enums (QtCore.Qt.Key for example) may be pickled.

这篇关于Python:Pickle 和 Qt (PyQT)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！