QThread ：Destroyed while thread is still running

程序运行报错：QThread ：Destroyed while thread is still running

pyqt在ui界面中，查db的大量数据会卡顿
用，必须用QThread解决
今天运行界面报错：QThread ：Destroyed while thread is still running

解决方案：
self.
exec()

pyqt真呵呵…

pyqt多线程模块导入from PyQt5.QtCore import Qt, QThread, pyqtSignal
# 控件的导入
from PyQt5.QtWidgets import QMessageBox, QCompleter

在主线程中：
1.实例化为实力参数self.
2.加exec()保护线程
3.代码不全，这是主线程中调用多线程的代码self.symbol_thread = GetSymbolListThread()self.symbol_thread.start()self.symbol_thread.exec()self.symbol_thread.bardata_signal.connect(self.emitbardata)

主线程中接受多线程传值的控件逻辑实现def emitbardata(self, symbol_list: list):self.completer = QCompleter(symbol_list)self.completer.setFilterMode(Qt.MatchContains)self.completer.setCompletionMode(QCompleter.PopupCompletion)self.symbol_line.setCompleter(self.completer)

多线程读取数据库代码实现class GetSymbolListThread(QThread):bardata_signal = pyqtSignal(list)def __init__(self):super(GetSymbolListThread, self).__init__()#必须交run，内部实现叫run，重写也要叫rundef run(self):baroverview = database_manager.get_bar_overview()vt_symbol_set = set()for item in baroverview:vt_symbol = f'{item.symbol}.{item.exchange.value}'vt_symbol_set.add(vt_symbol)symbol_list = list(vt_symbol_set)self.bardata_signal.emit(symbol_list)

QThread ：Destroyed while thread is still running相关推荐

【PyQt5】：QThread：Destroyed while thread is still running 解决方法
PyQt5在执行多线程的时候遇到:QThread:Destroyed while thread is still running 错误分析: QThread的子线程还在运行但是线程就被销毁了,导致程序 ...
qthread destroyed while thread is still running
qthread destroyed while thread is still running 然后报错(windows下):QThread: Destroyed while thread is st ...
QThread: Destroyed while thread is still running
QThread: Destroyed while thread is still running 原因:python中线程不能是临时变量, 错误代码: for cam in cams:mdcall_t ...
我遇到的QThread: Destroyed while thread is stil running解决
在写操作系统课设的时候,用到了pygtSignal这个信号类,希望实现QT界面中数据的不断刷新.模仿了该链接的代码:pyQt5 实时刷新界面例子 QThread 想要两个信号与槽机制同时工作,但是发现 ...
Hadoop streaming： Exception in thread main java.io.IOException: No space left on device
在使用Hadoop streaming时,遇到报错如标题: packageJobJar: [mapper_sim.py, reducer_sim.py, XXX files, /tmp/hadoop- ...
解决：Exception in thread main java.lang.NoSuchMethodError: com.google.common.util.concurrent.MoreExe
前些天发现了一个巨牛的人工智能学习网站,通俗易懂,风趣幽默,忍不住分享一下给大家.点击跳转到教程. 1.报错: Exception in thread "main" java.la ...
解决windows下Error：node with name rabbit already running on “XXX” 和管理页面打不开问题
背景:重启电脑后,发现rabbit的控制台页面无法打开,启动rabbit,抛如下异常:Error:node with name "rabbit" already running o ...
c+++11并发编程语言,C++11并发编程：多线程std:thread
原标题:C++11并发编程:多线程std:thread 一:概述 C++11引入了thread类,大大降低了多线程使用的复杂度,原先使用多线程只能用系统的API,无法解决跨平台问题,一套代码平台移植, ...
【Java】Kryo运行报错：Exception in thread “main“ java.lang.IllegalArgumentException:Class is not registered
练习代码如下: import com.esotericsoftware.kryo.Kryo; import com.esotericsoftware.kryo.io.Input; import com ...

QThread ：Destroyed while thread is still running

QThread ：Destroyed while thread is still running相关推荐

最新文章

热门文章