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03修复，更新注释以反映PySide6的懒加载特性，并优化子类递归显示函数 #10

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03修复，更新注释以反映PySide6的懒加载特性，并优化子类递归显示函数 #10

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8768f9e
更新注释以反映PySide6的懒加载特性，并优化子类递归显示函数
Aug 21, 2026
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[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Aug 21, 2026
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14 changes: 10 additions & 4 deletions 01-HelloWorld-基本结构/03-类的继承关系.py
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Original file line number Diff line number Diff line change
@@ -1,13 +1,19 @@
from PySide6 import QtWidgets

# PySide6 现在懒加载，**类不被访问，就不会出现在`__subclasses__()`**。
# `__subclasses__()` 做 Qt 继承树遍历这个写法，现在已经不太靠谱，属于旧教程遗留
# 强制引用几个子类，触发加载到内存
_ = QtWidgets.QPushButton
_ = QtWidgets.QRadioButton
_ = QtWidgets.QCheckBox
_ = QtWidgets.QToolButton


def get_sub_classes(class_):
"""递归地显示某一类的所有子类"""
for subclass in class_.__subclasses__():
print(subclass)
if len(subclass.__subclasses__()) > 0:
get_sub_classes(subclass)
get_sub_classes(subclass)


# 查看QAbstractButton抽象基类的所有子类，了解Qt6提供了哪些按钮控件
app = QtWidgets.QApplication([])
get_sub_classes(QtWidgets.QAbstractButton)