Windows下安装PyQt5

安装Python

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python 基础篇章1-安装

安装PyQt5

概述：pip 安装PyQt5, PyQt5-tools

安装PyQt5
python官方源下载较慢，因此使用阿里云的国内镜像源。

C:\Users\admin>pip install PyQt5 -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
Looking in indexes: http://mirrors.aliyun.com/pypi/simple/
Collecting PyQt5
Downloading http://mirrors.aliyun.com/pypi/packages/9e/53/9476464c2a8db5252de96fd8ff39ec5db6ef09b8a08a7152546b7f142d90/PyQt5-5.15.4-cp36.cp37.cp38.cp39-none-win_amd64.whl (6.8 MB)
    |████████████████████████████████| 6.8 MB 3.2 MB/s
Collecting PyQt5-Qt5>=5.15
Downloading http://mirrors.aliyun.com/pypi/packages/37/97/5d3b222b924fa2ed4c2488925155cd0b03fd5d09ee1cfcf7c553c11c9f66/PyQt5_Qt5-5.15.2-py3-none-win_amd64.whl (50.1 MB)
    |████████████████████████████████| 50.1 MB 547 kB/s
Collecting PyQt5-sip<13,>=12.8
Downloading http://mirrors.aliyun.com/pypi/packages/4b/67/4d4f176ebd76673f0701fbb8a571f1b25d6f8b9b52c3e8905a375d87b925/PyQt5_sip-12.8.1-cp38-cp38-win_amd64.whl (63 kB)
    |████████████████████████████████| 63 kB 686 kB/s
Installing collected packages: PyQt5-sip, PyQt5-Qt5, PyQt5
Successfully installed PyQt5-5.15.4 PyQt5-Qt5-5.15.2 PyQt5-sip-12.8.1

安装Qt工具

C:\Users\admin>pip install PyQt5-tools -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
Looking in indexes: http://mirrors.aliyun.com/pypi/simple/
Collecting PyQt5-tools
Downloading http://mirrors.aliyun.com/pypi/packages/da/a3/f791afe43c4bd6e1b2b1f7b4e53a84bc0d12e39a059a47d8d3bf59c8e265/pyqt5_tools-5.15.2.3.0.2-py3-none-any.whl (28 kB)
Collecting click
Downloading http://mirrors.aliyun.com/pypi/packages/d2/3d/fa76db83bf75c4f8d338c2fd15c8d33fdd7ad23a9b5e57eb6c5de26b430e/click-7.1.2-py2.py3-none-any.whl (82 kB)
    |████████████████████████████████| 82 kB 364 kB/s
Collecting pyqt5==5.15.2
Downloading http://mirrors.aliyun.com/pypi/packages/aa/72/754c693db0e745b9fe47debc3ec52844461f090d5beff28489a0cde5ef82/PyQt5-5.15.2-5.15.2-cp35.cp36.cp37.cp38.cp39-none-win_amd64.whl (56.9 MB)
    |████████████████████████████████| 56.9 MB 2.2 MB/s
Collecting pyqt5-plugins<5.15.2.3,>=5.15.2.2
Downloading http://mirrors.aliyun.com/pypi/packages/52/b7/10aeef6008d16ce027759b83776a2c24504bf66cde38b4a96d3f34839137/pyqt5_plugins-5.15.2.2.1.0-cp38-cp38-win_amd64.whl (65 kB)
    |████████████████████████████████| 65 kB 4.5 MB/s
Collecting python-dotenv
Downloading http://mirrors.aliyun.com/pypi/packages/86/62/aacbd1489fc6026c9278e9fd5cfdd49c5b1b5375d3c97a624e8f8f999eb2/python_dotenv-0.17.0-py2.py3-none-any.whl (18 kB)
Requirement already satisfied: PyQt5-sip<13,>=12.8 in d:\study\python380\lib\site-packages (from pyqt5==5.15.2->PyQt5-tools) (12.8.1)
Collecting qt5-tools<5.15.2.2,>=5.15.2.1
Downloading http://mirrors.aliyun.com/pypi/packages/4f/9f/627ee838664ad9b01c5db2c4274d3e68f18f78331b6ba61f770cc4435e67/qt5_tools-5.15.2.1.0.1-py3-none-any.whl (12 kB)
Collecting qt5-applications<5.15.2.3,>=5.15.2.2
Downloading http://mirrors.aliyun.com/pypi/packages/21/bc/caa266764d44955a0d908f6b1ca349af4b72e93a15a4b5feeba6df2aa980/qt5_applications-5.15.2.2.1-py3-none-win_amd64.whl (61.0 MB)
    |████████████████████████████████| 61.0 MB 3.3 MB/s
Installing collected packages: qt5-applications, click, qt5-tools, pyqt5, python-dotenv, pyqt5-plugins, PyQt5-tools
Attempting uninstall: pyqt5
    Found existing installation: PyQt5 5.15.4
    Uninstalling PyQt5-5.15.4:
    Successfully uninstalled PyQt5-5.15.4
Successfully installed PyQt5-tools-5.15.2.3.0.2 click-7.1.2 pyqt5-5.15.2 pyqt5-plugins-5.15.2.2.1.0 python-dotenv-0.17.0 qt5-applications-5.15.2.2.1 qt5-tools-5.15.2.1.0.1

添加环境变量
- 将designer.exe目录添加到环境变量 (可在cmd中输入path确认)

不同版本designer.exe的所在路径可能不一样。安装过三次，每次都不一样，因此可以在pyqt的几个目录下找一下

designer

测试PyQt5环境是否安装成功

import sys
from PyQt5 import QtWidgets, QtCore

app = QtWidgets.QApplication(sys.argv)
widget = QtWidgets.QWidget()
widget.resize(360, 360)
widget.setWindowTitle('Hello, PyQt5')
widget.show()
sys.exit(app.exec_())

执行脚本之后弹出一个窗口(Widget)界面,则说明PyQt5环境安装成功。

PyQt5的依赖模块

在cmd中进入Python交互窗口然后输入语句import PyQt5和help(PyQt5).
其中的PACKAGE CONTENTS就是其依赖模块。

C:\Users\admin>python
Python 3.8.0 (tags/v3.8.0:fa919fd, Oct 14 2019, 19:37:50) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import PyQt5
>>> help(PyQt5)
Help on package PyQt5:

NAME
    PyQt5

DESCRIPTION
    # Copyright (c) 2020 Riverbank Computing Limited <info@riverbankcomputing.com>
    #
    # This file is part of PyQt5.
    #
    # This file may be used under the terms of the GNU General Public License
    # version 3.0 as published by the Free Software Foundation and appearing in
    # the file LICENSE included in the packaging of this file.  Please review the
    # following information to ensure the GNU General Public License version 3.0
    # requirements will be met: http://www.gnu.org/copyleft/gpl.html.
    #
    # If you do not wish to use this file under the terms of the GPL version 3.0
    # then you may purchase a commercial license.  For more information contact
    # info@riverbankcomputing.com.
    #
    # This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    # WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

PACKAGE CONTENTS
    QAxContainer
    Qt
    QtBluetooth
    QtCore
    QtDBus
    QtDesigner
    QtGui
    QtHelp
    QtLocation
    QtMultimedia
    QtMultimediaWidgets
    QtNetwork
    QtNetworkAuth
    QtNfc
    QtOpenGL
    QtPositioning
    QtPrintSupport
    QtQml
    QtQuick
    QtQuick3D
    QtQuickWidgets
    QtRemoteObjects
    QtSensors
    QtSerialPort
    QtSql
    QtSvg
    QtTest
    QtTextToSpeech
    QtWebChannel
    QtWebSockets
    QtWidgets
    QtWinExtras
    QtXml
    QtXmlPatterns
    _QOpenGLFunctions_2_0
    _QOpenGLFunctions_2_1
    _QOpenGLFunctions_4_1_Core
    pylupdate
    pylupdate_main
    pyrcc
    pyrcc_main
    sip
    uic (package)

FILE
    d:\study\python380\lib\site-packages\pyqt5\__init__.py