效果预览

实际效果中带有白色面板，看如下代码

实现代码

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton, QFrame, QLabel, QSizePolicy
from PyQt5.QtCore import QPropertyAnimation, QEasingCurve, Qt

class CollapsiblePanel(QWidget):
    def __init__(self, title, content, parent=None):
        super(CollapsiblePanel, self).__init__(parent)

        self.toggle_button = QPushButton(title)
        self.toggle_button.setCheckable(True)
        self.toggle_button.setChecked(False)
        self.toggle_button.setFixedSize