小编给大家分享一下python3+PyQt5如何创建多线程网络应用，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

专注于为中小企业提供网站设计、成都网站设计服务,电脑端+手机端+微信端的三站合一,更高效的管理,为中小企业岱山免费做网站提供优质的服务。我们立足成都，凝聚了一批互联网行业人才，有力地推动了近1000家企业的稳健成长，帮助中小企业通过网站建设实现规模扩充和转变。

以下为TCP客户端的程序代码：

#!/usr/bin/env python3

import sys
from PyQt5.QtCore import (QByteArray, QDataStream, QDate, QIODevice,
    QRegExp, Qt)
from PyQt5.QtWidgets import (QApplication, QDateEdit, QFrame, QGridLayout,
    QHBoxLayout, QLabel, QLineEdit, QPushButton,
    QWidget)
from PyQt5.QtGui import QRegExpValidator
from PyQt5.QtNetwork import (QTcpSocket,)

MAC = True
try:
  from PyQt5.QtGui import qt_mac_set_native_menubar
except ImportError:
  MAC = False

PORT = 9407
SIZEOF_UINT16 = 2


class BuildingServicesClient(QWidget):

  def __init__(self, parent=None):
    super(BuildingServicesClient, self).__init__(parent)

    self.socket = QTcpSocket()
    self.nextBlockSize = 0
    self.request = None

    roomLabel = QLabel("&Room")
    self.roomEdit = QLineEdit()
    roomLabel.setBuddy(self.roomEdit)
    regex = QRegExp(r"[0-9](?:0[1-9]|[12][0-9]|3[0-4])")
    self.roomEdit.setValidator(QRegExpValidator(regex, self))
    self.roomEdit.setAlignment(Qt.AlignRight|Qt.AlignVCenter)
    dateLabel = QLabel("&Date")
    self.dateEdit = QDateEdit()
    dateLabel.setBuddy(self.dateEdit)
    self.dateEdit.setAlignment(Qt.AlignRight|Qt.AlignVCenter)
    self.dateEdit.setDate(QDate.currentDate().addDays(1))
    self.dateEdit.setDisplayFormat("yyyy-MM-dd")
    responseLabel = QLabel("Response")
    self.responseLabel = QLabel()
    self.responseLabel.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)

    self.bookButton = QPushButton("&Book")
    self.bookButton.setEnabled(False)
    self.unBookButton = QPushButton("&Unbook")
    self.unBookButton.setEnabled(False)
    quitButton = QPushButton("&Quit")
    if not MAC:
      self.bookButton.setFocusPolicy(Qt.NoFocus)
      self.unBookButton.setFocusPolicy(Qt.NoFocus)

    buttonLayout = QHBoxLayout()
    buttonLayout.addWidget(self.bookButton)
    buttonLayout.addWidget(self.unBookButton)
    buttonLayout.addStretch()
    buttonLayout.addWidget(quitButton)
    layout = QGridLayout()
    layout.addWidget(roomLabel, 0, 0)
    layout.addWidget(self.roomEdit, 0, 1)
    layout.addWidget(dateLabel, 0, 2)
    layout.addWidget(self.dateEdit, 0, 3)
    layout.addWidget(responseLabel, 1, 0)
    layout.addWidget(self.responseLabel, 1, 1, 1, 3)
    layout.addLayout(buttonLayout, 2, 1, 1, 4)
    self.setLayout(layout)

    self.socket.connected.connect(self.sendRequest)
    self.socket.readyRead.connect(self.readResponse)
    self.socket.disconnected.connect(self.serverHasStopped)
    #self.connect(self.socket,
    #       SIGNAL("error(QAbstractSocket::SocketError)"),
     #      self.serverHasError)
    self.socket.error.connect(self.serverHasError)
    self.roomEdit.textEdited.connect(self.updateUi)
    self.dateEdit.dateChanged.connect(self.updateUi)

    self.bookButton.clicked.connect(self.book)
    self.unBookButton.clicked.connect(self.unBook)
    quitButton.clicked.connect(self.close)

    self.setWindowTitle("Building Services")


  def updateUi(self):
    enabled = False
    if (self.roomEdit.text() and
      self.dateEdit.date() > QDate.currentDate()):
      enabled = True
    if self.request is not None:
      enabled = False
    self.bookButton.setEnabled(enabled)
    self.unBookButton.setEnabled(enabled)


  def closeEvent(self, event):
    self.socket.close()
    event.accept()


  def book(self):
    self.issueRequest("BOOK", self.roomEdit.text(),
             self.dateEdit.date())


  def unBook(self):
    self.issueRequest("UNBOOK", self.roomEdit.text(),
             self.dateEdit.date())


  def issueRequest(self, action, room, date):
    self.request = QByteArray()
    stream = QDataStream(self.request, QIODevice.WriteOnly)
    stream.setVersion(QDataStream.Qt_5_7)
    stream.writeUInt16(0)
    stream.writeQString(action)
    stream.writeQString(room)
    stream << date
    stream.device().seek(0)
    stream.writeUInt16(self.request.size() - SIZEOF_UINT16)#overwrite seek(0)
    self.updateUi()
    if self.socket.isOpen():
      self.socket.close()
    self.responseLabel.setText("Connecting to server...")
    self.socket.connectToHost("localhost", PORT)


  def sendRequest(self):
    self.responseLabel.setText("Sending request...")
    self.nextBlockSize = 0
    self.socket.write(self.request)
    self.request = None


  def readResponse(self):
    stream = QDataStream(self.socket)
    stream.setVersion(QDataStream.Qt_5_7)

    while True:
      if self.nextBlockSize == 0:
        if self.socket.bytesAvailable() < SIZEOF_UINT16:
          break
        self.nextBlockSize = stream.readUInt16()
      if self.socket.bytesAvailable() < self.nextBlockSize:
        break
      action = ""
      room = ""
      date = QDate()
      #stream >> action >> room
      action=stream.readQString()
      room=stream.readQString()
      if action != "ERROR":
        stream >> date
      if action == "ERROR":
        msg = "Error: {0}".format(room)
      elif action == "BOOK":
        msg = "Booked room {0} for {1}".format(room,date.toString(Qt.ISODate))
      elif action == "UNBOOK":
        msg = "Unbooked room {0} for {1}".format(room,date.toString(Qt.ISODate))
      self.responseLabel.setText(msg)
      self.updateUi()
      self.nextBlockSize = 0


  def serverHasStopped(self):
    self.responseLabel.setText(
        "Error: Connection closed by server")
    self.socket.close()


  def serverHasError(self, error):
    self.responseLabel.setText("Error: {0}".format(self.socket.errorString()))
    self.socket.close()


app = QApplication(sys.argv)
form = BuildingServicesClient()
form.show()
app.exec_()

以下为TCP服务端的程序代码：

#!/usr/bin/env python3
import bisect
import collections
import sys
from PyQt5.QtCore import (QByteArray, QDataStream, QDate, QReadWriteLock, QThread,QIODevice, Qt)
from PyQt5.QtWidgets import (QApplication, QMessageBox, QPushButton)
from PyQt5.QtNetwork import (QAbstractSocket,QHostAddress, QTcpServer, QTcpSocket)

PORT = 9407
SIZEOF_UINT16 = 2
MAX_BOOKINGS_PER_DAY = 5

# Key = date, value = list of room IDs
Bookings = collections.defaultdict(list)


def printBookings():
  for key in sorted(Bookings):
    print(key, Bookings[key])
  print()


class Thread(QThread):

  lock = QReadWriteLock()

  def __init__(self, socketId, parent):
    super(Thread, self).__init__(parent)
    self.socketId = socketId


  def run(self):
    socket = QTcpSocket()
    if not socket.setSocketDescriptor(self.socketId):
      #self.emit(SIGNAL("error(int)"), socket.error())
      self.error.connect(socket.error)
      return
    while socket.state() == QAbstractSocket.ConnectedState:
      nextBlockSize = 0
      stream = QDataStream(socket)
      stream.setVersion(QDataStream.Qt_5_7)
      if (socket.waitForReadyRead() and
        socket.bytesAvailable() >= SIZEOF_UINT16):
        nextBlockSize = stream.readUInt16()
      else:
        self.sendError(socket, "Cannot read client request")
        return
      if socket.bytesAvailable() < nextBlockSize:
        if (not socket.waitForReadyRead(60000) or
          socket.bytesAvailable() < nextBlockSize):
          self.sendError(socket, "Cannot read client data")
          return
      action = ""
      room = ""
      date = QDate()
      action=stream.readQString()
      if action in ("BOOK", "UNBOOK"):
        room=stream.readQString()
        stream >> date
        try:
          Thread.lock.lockForRead()
          bookings = Bookings.get(date.toPyDate())
        finally:
          Thread.lock.unlock()
        uroom = str(room)
      if action == "BOOK":
        newlist = False
        try:
          Thread.lock.lockForRead()
          if bookings is None:
            newlist = True
        finally:
          Thread.lock.unlock()
        if newlist:
          try:
            Thread.lock.lockForWrite()
            bookings = Bookings[date.toPyDate()]
          finally:
            Thread.lock.unlock()
        error = None
        insert = False
        try:
          Thread.lock.lockForRead()
          if len(bookings) < MAX_BOOKINGS_PER_DAY:
            if uroom in bookings:
              error = "Cannot accept duplicate booking"
            else:
              insert = True
          else:
            error = "{0} is fully booked".format(date.toString(Qt.ISODate))
        finally:
          Thread.lock.unlock()
        if insert:
          try:
            Thread.lock.lockForWrite()
            bisect.insort(bookings, uroom)
          finally:
            Thread.lock.unlock()
          self.sendReply(socket, action, room, date)
        else:
          self.sendError(socket, error)
      elif action == "UNBOOK":
        error = None
        remove = False
        try:
          Thread.lock.lockForRead()
          if bookings is None or uroom not in bookings:
            error = "Cannot unbook nonexistent booking"
          else:
            remove = True
        finally:
          Thread.lock.unlock()
        if remove:
          try:
            Thread.lock.lockForWrite()
            bookings.remove(uroom)
          finally:
            Thread.lock.unlock()
          self.sendReply(socket, action, room, date)
        else:
          self.sendError(socket, error)
      else:
        self.sendError(socket, "Unrecognized request")
      socket.waitForDisconnected()
      try:
        Thread.lock.lockForRead()
        printBookings()
      finally:
        Thread.lock.unlock()


  def sendError(self, socket, msg):
    reply = QByteArray()
    stream = QDataStream(reply, QIODevice.WriteOnly)
    stream.setVersion(QDataStream.Qt_5_7)
    stream.writeUInt16(0)
    stream.writeQString("ERROR")
    stream.writeQString(msg)
    stream.device().seek(0)
    stream.writeUInt16(reply.size() - SIZEOF_UINT16)
    socket.write(reply)

  def sendReply(self, socket, action, room, date):
    reply = QByteArray()
    stream = QDataStream(reply, QIODevice.WriteOnly)
    stream.setVersion(QDataStream.Qt_5_7)
    stream.writeUInt16(0)
    stream.writeQString(action)
    stream.writeQString(room)
    stream<= MAX_BOOKINGS_PER_DAY:
          continue
        bisect.insort(bookings, "{0:1d}{1:02d}".format(
               floor, room))
    printBookings()


app = QApplication(sys.argv)
form = BuildingServicesDlg()
form.show()
form.move(0, 0)
app.exec_()

以上是“python3+PyQt5如何创建多线程网络应用”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注创新互联行业资讯频道！

本文标题：python3+PyQt5如何创建多线程网络应用-创新互联
URL网址：http://csdahua.cn/article/shdcc.html