#python PyQt Mac
import sys
from PyQt5.QtWidgets import QApplication,QWidget,QPushButton,QLabel,QLineEdit,QDesktopWidget, QVBoxLayout,QGroupBox,QMainWindow
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import Qt
class MyWindow(QWidget):
def __int__(self):
super().__init__()
self.resize(1000,800)
self.setWindowTitle("垂直布局")
layout = QVBoxLayout()
#创建布局器
layout.addStretch(1)
btn1 = QPushButton("button1")
layout.addWidget(btn1)
layout.addStretch(1)
btn2 = QPushButton("button2")
layout.addWidget(btn2)
layout.addStretch(2)
self.setLayout(layout)#让当前窗口使用这个排列规则
if __name__ == '__main__':
app = QApplication(sys.argv)
w = MyWindow()
w.show()
app.exec()
运行之后任何按钮、标题都无法显示,有人可以帮忙看看是为什么吗?