Python中的信号发射导致退出代码139
我正在尝试创建一个函数,它将8个值传递给使用QtDesigner创建的窗口应用程序中的进度条。 也就是说,有一个函数实际上生成了这个值。我想每秒钟执行一次,以获取这些值并更新显示这些值的进度条 我结合了有关使用Python制作图形应用程序和使用动态更新进度条制作应用程序的教程:Python中的信号发射导致退出代码139,python,multithreading,pyside,signals-slots,Python,Multithreading,Pyside,Signals Slots,我正在尝试创建一个函数,它将8个值传递给使用QtDesigner创建的窗口应用程序中的进度条。 也就是说,有一个函数实际上生成了这个值。我想每秒钟执行一次,以获取这些值并更新显示这些值的进度条 我结合了有关使用Python制作图形应用程序和使用动态更新进度条制作应用程序的教程: Python Qt开发: 带线程的PyQt进度条: 问题在于,值传递正确,但在发送信号时,整个应用程序会崩溃,并显示以下消息: 过程结束,退出代码为139(被信号11中断: SIGSEGV) 这是我的密码: 生成值的模块
import time
from random import randint
import threading
def getSignals():
time.sleep(1)
signals = (randint(0, 100), randint(0, 100), randint(0, 100), randint(0, 100), randint(0, 100), randint(0, 100), randint(0, 100), randint(0, 100), )
return signals
这里是主要程序代码:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from PySide.QtCore import *
from PySide.QtGui import *
from PyQt4 import QtCore
import sys
import time
import signalPreview # window library
import probkowanie # values generating library
class MainDialog(QDialog, signalPreview.Ui_mainDialog):
def __init__(self, parent=None):
super(MainDialog, self).__init__(parent)
self.setupUi(self)
self.threadclass = ThreadClass()
self.threadclass.start()
self.connect(self.threadclass, QtCore.SIGNAL('MYO_SIGNALS'), self.updateProgressBars)
def updateProgressBars(self, signals):
self.progressBar.setValue(signals[0])
class ThreadClass(QtCore.QThread):
def __init__(self, parent = None):
super(ThreadClass, self).__init__(parent)
def run(self):
while 1:
signals = probkowanie.getSignals()
self.emit(QtCore.SIGNAL('MYO_SIGNALS'), 5) # this line causes crash
print signals # it works correctly
app = QApplication(sys.argv)
form = MainDialog()
form.show()
app.exec_()
我认为这可能是由混合库引起的。我使用PySide的QtCore,尽管教程2基于PyQt4。我的决定是因为教程1是基于PySide的。
我试着改变:
from PySide import QtCore
到
但是我又犯了一系列错误,我不知道该怎么办:
Traceback (most recent call last):
File "/usr/lib/pycharm/helpers/pydev/pydevd.py", line 1580, in <module>
globals = debugger.run(setup['file'], None, None, is_module)
File "/usr/lib/pycharm/helpers/pydev/pydevd.py", line 964, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "/mnt/Grubas/Projekty/Biomed/MYO/myo.py", line 36, in <module>
form = MainDialog()
File "/mnt/Grubas/Projekty/Biomed/MYO/myo.py", line 20, in __init__
self.connect(self.threadclass, QtCore.SIGNAL('MYO_SIGNALS'), self.updateProgressBars)
TypeError: 'PySide.QtCore.QObject.connect' called with wrong argument types:
PySide.QtCore.QObject.connect(ThreadClass, str, instancemethod)
Supported signatures:
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, str, callable, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, PySide.QtCore.QMetaMethod, PySide.QtCore.QObject, PySide.QtCore.QMetaMethod, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, str, PySide.QtCore.QObject, str, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, str, str, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection) PySide.QtCore.QObject.connect(str, callable, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(str, PySide.QtCore.QObject, str, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
回溯(最近一次呼叫最后一次):
文件“/usr/lib/pycharm/helpers/pydev/pydevd.py”,第1580行,在
globals=debugger.run(setup['file'],None,None,is_模块)
文件“/usr/lib/pycharm/helpers/pydev/pydevd.py”,第964行,正在运行
pydev_imports.execfile(文件、全局、局部)#执行脚本
文件“/mnt/Grubas/Projekty/Biomed/MYO/MYO.py”,第36行,中
form=MainDialog()
文件“/mnt/Grubas/Projekty/Biomed/MYO/MYO.py”,第20行,在__
self.connect(self.threadclass、QtCore.SIGNAL('MYO_SIGNALS')、self.updateProgressBars)
TypeError:使用错误的参数类型调用了“PySide.QtCore.QObject.connect”:
PySide.QtCore.QObject.connect(ThreadClass、str、instancemethod)
支持的签名:
PySide.QtCore.QObject.connect(PySide.QtCore.QObject,str,可调用,PySide.QtCore.Qt.ConnectionType=Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject,PySide.QtCore.QMetaMethod,PySide.QtCore.QObject,PySide.QtCore.QMetaMethod,PySide.QtCore.Qt.ConnectionType=Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject,str,PySide.QtCore.QObject,str,PySide.QtCore.Qt.ConnectionType=Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject,str,str,PySide.QtCore.Qt.ConnectionType=Qt.AutoConnection)PySide.QtCore.QObject.connect(str,可调用,PySide.QtCore.Qt.ConnectionType=Qt.AutoConnection)
PySide.QtCore.QObject.connect(str,PySide.QtCore.QObject,str,PySide.QtCore.Qt.ConnectionType=Qt.AutoConnection)
@编辑
在提供@ekhumoro脚本提出的更改后,脚本没有崩溃,但现在我遇到另一个错误:
QObject::connect:无法对“object”类型的参数进行排队(请确保
“对象”是使用qRegisterMetaType()注册的。)
我试图自己寻找解决方案,但我没有找到我需要的确切代码。我还尝试将信号类型从(对象)转换为(元组)或(列表),但这会导致另一个错误:
TypeError:用于调用元函数的未知类型(可能是
信号):元组
我找到的大多数解决方案都是基于PyQT的。有没有一种简单的方法可以为PySide重写它?
下面是一个解决方案示例,它似乎是正确的,但使用PyQT生成:
您认为混合使用PySide和PyQt会导致问题是正确的,因此您需要删除其中一个。然而,崩溃本身可能是由PySide中的错误引起的。这里有一个SO问题和一个类似的问题:
MYO\u信号的方式
下面是脚本的固定版本(更改的行将被注释):
您认为混合使用PySide和PyQt会导致问题是正确的,因此需要删除其中一个。然而,崩溃本身可能是由PySide中的错误引起的。这里有一个SO问题和一个类似的问题:
因此,您还需要更改定义和发出MYO\u信号的方式
下面是脚本的固定版本(更改的行将被注释):
由于其他错误,我已编辑我的帖子。如何对“object”类型的参数进行排队?@Asmox。我想你一定使用了pyside的旧版本,因为它对我来说很好用。无论如何,我已经更新了我的答案,改为使用pyqt4,这对你来说应该也可以。由于其他错误,我已经编辑了我的帖子。如何对“object”类型的参数进行排队?@Asmox。我想你一定使用了pyside的旧版本,因为它对我来说很好用。无论如何,我已经更新了我的答案,改为使用pyqt4,这对您来说也应该可以。
Traceback (most recent call last):
File "/usr/lib/pycharm/helpers/pydev/pydevd.py", line 1580, in <module>
globals = debugger.run(setup['file'], None, None, is_module)
File "/usr/lib/pycharm/helpers/pydev/pydevd.py", line 964, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "/mnt/Grubas/Projekty/Biomed/MYO/myo.py", line 36, in <module>
form = MainDialog()
File "/mnt/Grubas/Projekty/Biomed/MYO/myo.py", line 20, in __init__
self.connect(self.threadclass, QtCore.SIGNAL('MYO_SIGNALS'), self.updateProgressBars)
TypeError: 'PySide.QtCore.QObject.connect' called with wrong argument types:
PySide.QtCore.QObject.connect(ThreadClass, str, instancemethod)
Supported signatures:
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, str, callable, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, PySide.QtCore.QMetaMethod, PySide.QtCore.QObject, PySide.QtCore.QMetaMethod, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, str, PySide.QtCore.QObject, str, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(PySide.QtCore.QObject, str, str, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection) PySide.QtCore.QObject.connect(str, callable, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
PySide.QtCore.QObject.connect(str, PySide.QtCore.QObject, str, PySide.QtCore.Qt.ConnectionType = Qt.AutoConnection)
# from PySide.QtCore import *
# from PySide.QtGui import *
# from PyQt4 import QtCore
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import sys
import time
import signalPreview # window library
import probkowanie # values generating library
class MainDialog(QDialog):
def __init__(self, parent=None):
super(MainDialog, self).__init__(parent)
self.setupUi(self)
self.threadclass = ThreadClass()
self.threadclass.start()
# self.connect(self.threadclass, QtCore.SIGNAL('MYO_SIGNALS'), self.updateProgressBars)
self.connect(self.threadclass, SIGNAL('MYO_SIGNALS'), self.updateProgressBars)
def updateProgressBars(self, signals):
self.progressBar.setValue(signals[0])
# class ThreadClass(QtCore.QThread):
class ThreadClass(QThread):
def __init__(self, parent = None):
super(ThreadClass, self).__init__(parent)
def run(self):
while 1:
signals = probkowanie.getSignals()
# self.emit(QtCore.SIGNAL('MYO_SIGNALS'), 5) # this line causes crash
self.emit(SIGNAL('MYO_SIGNALS'), signals)
print signals # it works correctly
app = QApplication(sys.argv)
form = MainDialog()
form.show()
app.exec_()