pyQt5:将PYQT信号从浮点转换为str

我有一个QObject,它以float的形式发出信号。对于QLabel,将其转换为str的最具python风格的方式是什么。setText方法?

from PyQt5.QtCore import QObject, pyqtSignal
from PyQt5 import uic 
from PyQt5.QtWidgets import QMainWindow, QLabel
   
class SerialComponent(QObject):
    value = pyqtSignal(float)

    def loop():
        value.emit(1.0)

class Main(QMainWindow):
    def __init__(self):
        super().__init__()
        uic.loadUi("Main.ui", self)

        component = SerialComponent()
        
        component.value.connect(label_display.setText)

这将导致

TypeError: setText(self, str): argument 1 has unexpected type 'float'

将pyqtSignal转换为str的最具Python风格的方式是什么?