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):
      &

以下为TCP客户端的程序代码：

本文通过python3+PyQt5实现《python Qt GUI快速编程》第18章的例子Building Services application。本例分别创建一个TCP客户端和TCP服务器，采用PyQt的QtNetwork模块，而不是Python标准库或Twisted网络引擎。
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,
           &

本文通过python3+pyqt5改写实现了python Qt gui 编程变成15章的excise例子。

#!/usr/bin/env python3
import os
import sys
from PyQt5.QtCore import (QFile, QVariant, Qt)
from PyQt5.QtWidgets import (QApplication, QDialog, QDialogButtonBox, QMenu,
        QMessageBox, QTableView, QVBoxLayout)
from PyQt5.QtSql import (QSqlDatabase, QSqlQuery, QSqlTableModel)

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

ID, CATEGORY, SHORTDESC, LONGDESC = range(4)


class ReferenceDataDlg(QDialog):

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

        self.model = QSqlTableModel(self)
    

本文通过将创建自定义模型保存船只数据，并会用两个不同的表格视图形式来显示同样的模型。
实现自定义模型，继承QAbstractTableModel，具体参照QT库。

#!/usr/bin/env python3

import platform
from PyQt5.QtCore import (QAbstractTableModel, QDataStream, QFile,
        QIODevice, QModelIndex,QVariant, Qt,pyqtSignal)
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import QApplication


NAME, OWNER, COUNTRY, DESCRIPTION, TEU = range(5)

MAGIC_NUMBER = 0x570C4
FILE_VERSION = 1


class Ship(object):

    def __init__(self, name, owner, country, teu=0, description=''):
        self.name = name
        self.owner = owner
      &nb

注：import qrc_resources，资源文件resources.qrc如下：

http://s1/mw690/003ytqMFzy78bzZLtks20&690





 sudo pyrcc5 -o qrc_resources.py resources.qrc 生成qrc_resources.py

---

/home/yrd/eric_workspace/chap09/textedit.py


from PyQt5.QtCore import (QFile, QFileInfo, QIODevice,
        QTextStream, Qt)
from PyQt5.QtWidgets import (QFileDialog, QMessageBox, QTextEdit)


class TextEdit(QTextEdit):

    NextId = 1

    def __init__(self, filename='', parent=None):
     

注：import qrc_resources，资源文件resources.qrc如下：
http://s1/mw690/003ytqMFzy78bzZLtks20&690

 sudo pyrcc5 -o qrc_resources.py resources.qrc 生成qrc_resources.py

---

/home/yrd/eric_workspace/chap09/textedit.py


from PyQt5.QtCore import (QFile, QFileInfo, QIODevice,
        QTextStream, Qt)
from PyQt5.QtWidgets import (QFileDialog, QMessageBox, QTextEdit)


class TextEdit(QTextEdit):

    NextId = 1

    def __init__(self, filename='', parent=None):
        super(TextEdi

---

import sys
from PyQt5.QtCore import (QSettings, Qt,QByteArray)
from PyQt5.QtWidgets import (QAction, QApplication, QListWidget,
        QMainWindow, Q

第一部分无借用Qt Designer，完全用代码实现。
第二部分则借用Qt Designer，快速实现。

---

第一部分：

import sys
from PyQt5.QtCore import (Qt)
from PyQt5.QtWidgets import (QApplication, QComboBox, QDialog,
        QDialogButtonBox, QFrame, QGridLayout, QHBoxLayout, QLabel,
        QSpinBox, QStackedWidget, QVBoxLayout, QWidget)

class VehicleRentalDlg(QDialog):

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

        vehicleLabel = QLabel('&Vehicle Type:')
        self.vehicleComboBox = QComboBox()
      &nb

---

import sys
from PyQt5.QtCore import (QDate, Qt)
from PyQt5.QtWidgets import (QApplication, QCheckBox, QDateEdit, QDialog,
        QDialogButtonBox, QDoubleSpinBox, QGridLayout, QHBoxLayout,
        QLabel, QLineEdit, QSpinBox, QTabWidget, QVBoxLayout, QWidget)


class PaymentDlg(QDialog):

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

        forenameLabel = QLabel('&Forename:')
     &nbs