我在python3.6上使用PyQt的Qthread的代码有问题 文件出错
F:\PROGRAMMES\Qt\Projet\cYrAnalyzer\worker2.py", line 14, in run
self._target(*self._args, **self._kwargs)
TypeError: execute_this_function() takes 1 positional argument but 2 were given
[Finished in 3.1s with exit code 3221226505]
这是worker2.py类:
from PyQt5.QtCore import *
from PyQt5 import QtCore
from functools import wraps
class Runner(QtCore.QThread):
def __init__(self, target, *args, **kwargs):
super().__init__()
self._target = target
self._args = args
self._kwargs = kwargs
def run(self):
self._target(*self._args, **self._kwargs)
def run(func):
@wraps(func)
def async_func(*args, **kwargs):
runner = Runner(func, *args, **kwargs)
func.__runner = runner
runner.start()
return async_func
这是主要课程:
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
import gui, os, time
from worker2 import *
class MyWindow(QMainWindow):
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.ui = gui.Ui_MainWindow()
self.ui.setupUi(self)
self.ui.compteur.clicked.connect(self.execute_this_function)
@run
def execute_this_function(self):
self.ui.edit_compteur.setText("1")
time.sleep(0.5)
self.ui.edit_compteur.setText("2")
time.sleep(0.5)
self.ui.edit_compteur.setText("3")
time.sleep(0.5)
self.ui.edit_compteur.setText("4")
time.sleep(0.5)
self.ui.edit_compteur.setText("5")
time.sleep(0.5)
错误:
self._target(*self._args, **self._kwargs)
TypeError: execute_this_function() takes 1 positional argument but 2 were given
您指出的错误是因为clicked是一个重载信号,也就是说,实际上它们是两个信号,一个带有布尔签名,另一个没有签名:
clicked = pyqtSignal([], [bool])
,默认情况下,它将尝试传递布尔值。因此,解决方案是使用@pyqtSlot
建立时隙签名由于上一个错误,仍然没有显示的另一个错误是您不应该直接更新GUI。如果需要传递额外的参数,一个简单的策略是使用functools.partial旁边的
QTimer.singleShot(0, ...)
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