pyqt5怎么将emit发送到文本框里

from PyQt5.QtCore import *

class MyTypeSignal(QObject):
#定义一个信号
sendmsg = pyqtSignal (object)
def run(self):
self.sendmsg. emit('你好')#发送信号
class MySlot(QObject):
def get(self,msg):

if name=='main':
send = MyTypeSignal()
slot = MySlot()
send.sendmsg. connect(slot.get)
send. run()