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from typing import Union
from functools import lru_cache
from AnyQt.QtCore import QObject, Property
@lru_cache(maxsize=200)
def _converter(type_: Union[type, str]):
class Obj(QObject):
_f = None
def _set(self, val):
self._f = val
def _get(self):
return self._f
prop = Property(type_, _get, _set)
def convert(value):
inst = Obj()
ok = inst.setProperty('prop', value)
if ok:
return inst.property('prop')
else:
return None
return convert
def qvariant_cast(value, type_: Union[type, str]):
converter = _converter(type_)
return converter(value)
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