所以我不確定這是一個錯誤還是什么，但我花了很長時間來解決這個問題，但無法解決。訪問調(diào)用QObject::property()函數(shù)時會出現(xiàn)問題。這是一個最小的可重現(xiàn)示例：import sysfrom PySide2 import QtCorefrom PySide2.QtWidgets import QApplicationfrom PySide2.QtCore import Qt, QCoreApplication, QObject, Slotfrom PySide2.QtQml import QQmlApplicationEngine, QQmlContextclass MyItem(QObject): def __init__(self): super(MyItem, self).__init__() self.name = "John" self.age = 22 @QtCore.Property(QtCore.QObject, constant=True) def getName(self): return self.name @QtCore.Property(QtCore.QObject, constant=True) def getAge(self): return self.ageif __name__ == '__main__': app = QApplication(sys.argv) provider = MyModelProvider() item = MyItem() print(item.property("getName")) # the program crashes here QApplication.setAttribute(Qt.AA_EnableHighDpiScaling) QCoreApplication.setAttribute(Qt.AA_UseHighDpiPixmaps) engine = QQmlApplicationEngine() engine.rootContext().setContextProperty('provider', provider) engine.load('qml/main.qml') sys.exit(app.exec_())該程序總是崩潰并顯示以下輸出：Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)
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TA貢獻1821條經(jīng)驗 獲得超5個贊
您的代碼失敗，因為返回的變量getName不是 aQObject而是 a str，類似于getAge返回 a int，因此解決方案是設(shè)置正確的簽名
import sys
from PySide2.QtCore import Property, QObject, QCoreApplication
class MyItem(QObject):
def __init__(self, parent=None):
super(MyItem, self).__init__(parent)
self.name = "John"
self.age = 22
@Property(str, constant=True)
def getName(self):
return self.name
@Property(int, constant=True)
def getAge(self):
return self.age
if __name__ == "__main__":
app = QCoreApplication(sys.argv)
item = MyItem()
print(item.property("getName"))
print(item.property("getAge"))
輸出：
John
22
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