PyQt5/PySide2是Qt环境的python实现，Qt可以实现跨平台的GUI编程。
PyQt5/PySide2环境需要包含 Anaconda（Python3环境），PyQt5/PySide2，eric6（把Qt的GUI设计文件转换为python文件），QtDesigner（Qt的GUI生成器）

1 Anaconda 2019.03

https://mirrors.tuna.tsinghua.edu.cn/anaconda/archive/

安装完成之后更换清华国内源：

conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
conda config --set show_channel_urls yes

2 PyQt5 /PySide2

  PyQt是GPLv3协议，大意是你的程序中用了它，你的程序就要开源，如果闭源商用就会违反协议（后果自负，脸皮够厚无所谓）。除非你搞封装动态加载那一套来强行规避。
  PySide是LGPL协议，如果你只是作为库用用它，你的程序还是可以闭源商用。

  所以很多人喜欢PySide。如果不做商业项目，强烈建议使用PyQt，资料多，稳定。需要开发闭源商用软件的就用PySide。

  GPL(General Public License)和LGPL( Lesser General Public License)是GNU的两种License。越来越多的自由软件(Free Software)使用GPL作为其授权声明，如果对GPL一点都不了解，有可能在使用自由软件时违反了GPL的授权。如果是个人或不正规的公司倒也无所谓，但如果是有规模的公司，恐怕会有被起诉的风险。

  LGPL是GPL的变种，也是GNU为了得到更多的甚至是商用软件开发商的支持而提出的。与 GPL的最大不同是，可以私有使用LGPL授权的自由软件，开发出来的新软件可以是私有的而不需要是自由软件。所以任何公司在使用自由软件之前应该保证在 LGPL或其它GPL变种的授权下。

PyQt5/PySide2 可以通过Python的pip命令安装。

（1）利用conda命令创建虚拟环境

conda create -n qt python=3

(base) zhou@ZHOU-PC:~$ conda create -n qt python=3
Collecting package metadata (current_repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: /home/zhou/Documents/soft/anaconda3/envs/qt

  added / updated specs:
    - python=3

The following NEW packages will be INSTALLED:

  ca-certificates    anaconda/pkgs/main/linux-64::ca-certificates-2019.5.15-0
  certifi            anaconda/pkgs/main/linux-64::certifi-2019.6.16-py37_0
  libedit            anaconda/pkgs/main/linux-64::libedit-3.1.20181209-hc058e9b_0
  libffi             anaconda/pkgs/main/linux-64::libffi-3.2.1-hd88cf55_4
  libgcc-ng          anaconda/pkgs/main/linux-64::libgcc-ng-9.1.0-hdf63c60_0
  libstdcxx-ng       anaconda/pkgs/main/linux-64::libstdcxx-ng-9.1.0-hdf63c60_0
  ncurses            anaconda/pkgs/main/linux-64::ncurses-6.1-he6710b0_1
  openssl            anaconda/pkgs/main/linux-64::openssl-1.1.1c-h7b6447c_1
  pip                anaconda/pkgs/main/linux-64::pip-19.1.1-py37_0
  python             anaconda/pkgs/main/linux-64::python-3.7.3-h0371630_0
  readline           anaconda/pkgs/main/linux-64::readline-7.0-h7b6447c_5
  setuptools         anaconda/pkgs/main/linux-64::setuptools-41.0.1-py37_0
  sqlite             anaconda/pkgs/main/linux-64::sqlite-3.28.0-h7b6447c_0
  tk                 anaconda/pkgs/main/linux-64::tk-8.6.8-hbc83047_0
  wheel              anaconda/pkgs/main/linux-64::wheel-0.33.4-py37_0
  xz                 anaconda/pkgs/main/linux-64::xz-5.2.4-h14c3975_4
  zlib               anaconda/pkgs/main/linux-64::zlib-1.2.11-h7b6447c_3

Proceed ([y]/n)? 

Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use
#
#     $ conda activate qt
#
# To deactivate an active environment, use
#
#     $ conda deactivate

(base) zhou@ZHOU-PC:~$ conda activate qt
(qt) zhou@ZHOU-PC:~$ 

（2） PyQt5/PySide2

  PyQt5/PySide2可以通过pip命令安装，可以只安装其中一种即可，目前多为安装PyQt5。
  Anaconda中自带的PyQt5版本为5.9.X，版本较低，现在最新的版本为5.12.X，因此若要安装最新的版本则必须使用Python自带的pip命令安装。

pip install pyside2

(qt) zhou@ZHOU-PC:~$ pip install pyside2
Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
Collecting pyside2
  Downloading https://mirrors.aliyun.com/pypi/packages/3d/a1/9300c616621ba1d1a3426d98b59cd5403045eafaa0263e68e7d4d48a49e4/PySide2-5.13.0-5.13.0-cp35.cp36.cp37-abi3-manylinux1_x86_64.whl (152.9MB)
     |████████████████████████████████| 152.9MB 1.5MB/s 
Collecting shiboken2==5.13.0 (from pyside2)
  Downloading https://mirrors.aliyun.com/pypi/packages/d5/e2/e121fa55a759a286588a4017f57f34c03e8b35722131a2189a4f0e84bbac/shiboken2-5.13.0-5.13.0-cp35.cp36.cp37-abi3-manylinux1_x86_64.whl (792kB)
     |████████████████████████████████| 798kB 1.6MB/s 
Installing collected packages: shiboken2, pyside2
Successfully installed pyside2-5.13.0 shiboken2-5.13.0

  安装PySide2时会自动安装依赖包shiboken2

  PyQt5环境通过另外一种方式安装（安装eric6时自动安装）

3 QtDesigner

  注意：PyQt5.9以后的版本不在包含QtDesigner，需要自行安装，在Windows环境下可以通过pip命令直接安装pyqt5-tools，里面就包含了QtDesigner等工具，但是在Linux或MacOS环境下该命令不适用，最好的解决办法是安装完整版本的Qt开发环境。
  QtDesigner需要安装Qt环境，Deepin15.10环境自带的Qt环境为4.9.x，最新Qt环境为5.12.x，因此要使用最新环境需要到官网下载安装包。

http://download.qt.io/archive/qt/

 下载完成之后安装Qt

 
QtDesigner位置：

/home/zhou/Documents/soft/Qt5.12.4/5.12.4/gcc_64/bin/designer

  QtDesigner需要记住，后面eric6中还需要指定QtTools文件位置

4 eric6

 eric6需要到官网下载安装包。

https://sourceforge.net/projects/eric-ide/files/eric6/stable/

（1）安装eric6

文件下载完成之后解压，终端命令行模式进入该文件运行命令

python install.py

(qt) zhou@ZHOU-PC:~/Documents/soft/eric6$ python install.py
Checking dependencies
Python Version: 3.7.3
PyQt5 could not be detected.
Error: No module named 'PyQt5'

Shall 'PyQt5' be installed using pip? (Y/n) 
Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
Collecting PyQt5
  Downloading https://mirrors.aliyun.com/pypi/packages/83/d0/b4860e06095c4e1e60294365bd0d2a0d3e3d4b9b64bcd0241f083ffc01f2/PyQt5-5.12.3-5.12.4-cp35.cp36.cp37.cp38-abi3-manylinux1_x86_64.whl (61.9MB)
     |████████████████████████████████| 62.0MB 1.7MB/s 
Collecting PyQt5_sip<13,>=4.19.14 (from PyQt5)
  Downloading https://mirrors.aliyun.com/pypi/packages/fe/4a/d995f9565b4cf1fa91781e377175b118b7c2bcb46e7c8f946e2745ee3e7f/PyQt5_sip-4.19.17-cp37-cp37m-manylinux1_x86_64.whl (67kB)
     |████████████████████████████████| 71kB 1.5MB/s 
Installing collected packages: PyQt5-sip, PyQt5
Successfully installed PyQt5-5.12.3 PyQt5-sip-4.19.17
Found PyQt5
Found pyuic5
PyQtWebEngine could not be detected.
Error: cannot import name 'QtWebEngineWidgets' from 'PyQt5' (/home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages/PyQt5/__init__.py)

Shall 'PyQtWebEngine' be installed using pip? (Y/n) 
Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
Collecting PyQtWebEngine
  Downloading https://mirrors.aliyun.com/pypi/packages/da/fb/aa8344730c31174ffc81453da2d8ad2a626e618915529da5c73185ccca89/PyQtWebEngine-5.12.1-5.12.4-cp35.cp36.cp37.cp38-abi3-manylinux1_x86_64.whl (60.4MB)
     |████████████████████████████████| 60.4MB 1.7MB/s 
Requirement already satisfied: PyQt5>=5.12 in /home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages (from PyQtWebEngine) (5.12.3)
Requirement already satisfied: PyQt5_sip<13,>=4.19.14 in /home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages (from PyQt5>=5.12->PyQtWebEngine) (4.19.17)
Installing collected packages: PyQtWebEngine
Successfully installed PyQtWebEngine-5.12.1
QScintilla could not be detected.
Error: cannot import name 'Qsci' from 'PyQt5' (/home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages/PyQt5/__init__.py)

Shall 'QScintilla' be installed using pip? (Y/n) 
Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
Collecting QScintilla
  Downloading https://mirrors.aliyun.com/pypi/packages/61/40/942a155ac1476861befbcff8ab7f73e233aba48f88af1bf58e98f9794ec3/QScintilla-2.11.2-5.12.4-cp35.cp36.cp37.cp38-abi3-manylinux1_x86_64.whl (2.7MB)
     |████████████████████████████████| 2.7MB 1.5MB/s 
Requirement already satisfied: PyQt5>=5.10.1 in /home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages (from QScintilla) (5.12.3)
Requirement already satisfied: PyQt5_sip<13,>=4.19.14 in /home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages (from PyQt5>=5.10.1->QScintilla) (4.19.17)
Installing collected packages: QScintilla
Successfully installed QScintilla-2.11.2
Found QScintilla2
Found QtGui
Found QtNetwork
Found QtPrintSupport
Found QtSql
Found QtSvg
Found QtWidgets
Found QtWebEngineWidgets
Qt Version: 5.12.4
sip Version: 4.19.17
PyQt Version: 5.12.3
QScintilla Version: 2.11.2
All dependencies ok.

Cleaning up old installation ...

Creating configuration file ...

Compiling user interface files ...

Compiling source files ...

Installing eric6 ...
Installing Python API files to '/home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages/eric6/api/python'.
Installing Ruby API files to '/home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages/eric6/api/ruby'.
Installing QSS API files to '/home/zhou/Documents/soft/anaconda3/envs/qt/lib/python3.7/site-packages/eric6/api/qss'.

Installation complete.

默认会安装PyQt5及依赖关系PyQt-sip和QScintilla，以及PyQtWebEngine。

（2）配置eric6

终端命令行中输入： eric6，启动eric6。eric6从18.xx版本不在支持中文界面。
“Setting - Preferences”，打开首选项页面。