[QProcessBar-ColourfulProgress执行时，最小化切换后报错]

[wuzhxing]

Environment : / 环境

• OS: Win10
• Python3.7
• PyQt5 5.15.4

执行QProcessBar-ColourfulProgress，最小化窗口-恢复窗口后报错，报错内容：

RuntimeError: wrapped C/C++ object of type QProgressStyleAnimation has been deleted
    __cause__ = None
    __class__ = <class 'RuntimeError'>
    __context__ = None
    __delattr__ = <method-wrapper '__delattr__' of RuntimeError object>
    __dict__ = {}
    __dir__ = <built-in method __dir__ of RuntimeError object>
    __doc__ = 'Unspecified run-time error.'
    __eq__ = <method-wrapper '__eq__' of RuntimeError object>
    __format__ = <built-in method __format__ of RuntimeError object>
    __ge__ = <method-wrapper '__ge__' of RuntimeError object>
    __getattribute__ = <method-wrapper '__getattribute__' of RuntimeError object>
    __gt__ = <method-wrapper '__gt__' of RuntimeError object>
    __hash__ = <method-wrapper '__hash__' of RuntimeError object>
    __init__ = <method-wrapper '__init__' of RuntimeError object>
    __init_subclass__ = <built-in method __init_subclass__ of type object>
    __le__ = <method-wrapper '__le__' of RuntimeError object>
    __lt__ = <method-wrapper '__lt__' of RuntimeError object>
    __ne__ = <method-wrapper '__ne__' of RuntimeError object>
    __new__ = <built-in method __new__ of type object>
    __reduce__ = <built-in method __reduce__ of RuntimeError object>
    __reduce_ex__ = <built-in method __reduce_ex__ of RuntimeError object>
    __repr__ = <method-wrapper '__repr__' of RuntimeError object>
    __setattr__ = <method-wrapper '__setattr__' of RuntimeError object>
    __setstate__ = <built-in method __setstate__ of RuntimeError object>
    __sizeof__ = <built-in method __sizeof__ of RuntimeError object>
    __str__ = <method-wrapper '__str__' of RuntimeError object>
    __subclasshook__ = <built-in method __subclasshook__ of type object>
    __suppress_context__ = False
    __traceback__ = <traceback object>
    args = ('wrapped C/C++ object of type QProgressStyleAnimation has been deleted',)
    with_traceback = <built-in method with_traceback of RuntimeError object>

The above is a description of an error in a Python program.  Here is
the original traceback:

Traceback (most recent call last):
  File "ColourfulProgress.py", line 140, in paintEvent
    step = int(self._animation.animationStep() % self._lineWidth)
  File "****\PyQt-master\QProgressBar\Lib\QStyleAnimation.py", line 97, in animationStep
    return self.currentTime() / (1000.0 / self._speed)
RuntimeError: wrapped C/C++ object of type QProgressStyleAnimation has been deleted