pyqt5 --布局管理器(QVBoxLayout )风格金鱼p撒娇帽子：
from pyqt5. qtwidgetsimportqapplication，q构件，QTextEdit，QVBoxLayout，qpushbuttonimportsysclasstexteditdemo (parent=self )._init_ ) parent ) self.setwindowtitle(qtextedit例') self 270 ) self.textedit=q textedit (self.BTN prestedit )“显示HTML”) l layout.add构件(self.textedit ) layout.add构件(self.BTNpress1) layout.add构件(self.bbidget ) d.connect (self.BTN press1_ clicked ) self.BTNpress2.clicked.connect ) self.BTNpress2((n单击按钮((defBTNpress2_clicked ) self ) :self.textedit.sethtml ) font color=' red ' size='6' redhellopyqt /font ' ) if _ name _==' _ _ main _ ' : app=qapplication (sys.argv ) win=TextEditDemo ) win.show