pyqgis

1 开发环境配置

• quick-guide-to-getting-started-with-pyqgis-3-on-windows  经测试，可用
  
• setting-up-pyqgis3-with-vscode-python3-on-windows         经测试，不可用
  

2 教程

• PyQGIS-Developer-Cookbook-cn
  
• PyQGIS Developer Cookbook
  

@echo off

SET OSGEO4W_ROOT=C:\OSGeo4W

call "%OSGEO4W_ROOT%"\bin\o4w_env.bat

call "%OSGEO4W_ROOT%"\apps\grass\grass83\etc\env.bat

@echo off

path %PATH%;%OSGEO4W_ROOT%\apps\qgis\bin

path %PATH%;%OSGEO4W_ROOT%\apps\grass\grass83\lib

path %PATH%;C:\OSGeo4W\apps\Qt5\bin

path %PATH%;C:\OSGeo4W\apps\Python312\Scripts

set PYTHONPATH=%PYTHONPATH%;%OSGEO4W_ROOT%\apps\qgis\python

set PYTHONHOME=%OSGEO4W_ROOT%\apps\Python312

set PATH=C:\Program Files\Git\bin;C:\Users\27096\AppData\Local\Programs\Microsoft VS Code;%PATH%

cmd.exe

C:\qgis_dev>python3 -c "import sys;print(sys.path)"

['', 

'C:\\aka\\my_git\\qgis_dev', 

'C:\\OSGeo4W\\bin',

'C:\\OSGeo4W\\bin\\python312.zip', 

'C:\\OSGeo4W\\apps\\grass\\grass83\\etc\\python', 

'C:\\OSGeo4W\\apps\\qgis\\python', 

'C:\\OSGeo4W\\apps\\Python312\\DLLs', 

'C:\\OSGeo4W\\apps\\Python312\\Lib', 

'C:\\OSGeo4W\\apps\\Python312', 

'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages', 'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages\\win32', 'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages\\win32\\lib', 'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages\\Pythonwin'

]

上面的列表为了美观，顺序调整过，下面是原始输出：

[

'', 

'C:\\OSGeo4W\\apps\\grass\\grass83\\etc\\python', 

'C:\\aka\\my_git\\qgis_dev', 

'C:\\OSGeo4W\\apps\\qgis\\python', 

'C:\\OSGeo4W\\bin\\python312.zip', 

'C:\\OSGeo4W\\apps\\Python312\\DLLs', 

'C:\\OSGeo4W\\apps\\Python312\\Lib', 

'C:\\OSGeo4W\\bin', 

'C:\\OSGeo4W\\apps\\Python312',

 'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages', 'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages\\win32', 'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages\\win32\\lib', 'C:\\OSGeo4W\\apps\\Python312\\Lib\\site-packages\\Pythonwin']

为什么存在  "C:\OSGeo4W\bin\python.exe" ？

这个文件有什么用？

• OSGeo4W Shell ----->   C:\OSGeo4W\OSGeo4W.bat  
• GRASS GIS 8.3.2------>  C:\OSGeo4W\bin\grass83.bat --gui
• QGIS Desktop 3.36.3 ------>  C:\OSGeo4W\bin\qgis-bin.exe
• Qt Designer with QGIS 3.36.3 custom widgets  ----> C:\OSGeo4W\bin\bgspawn.exe "C:\OSGeo4W\bin\qgis-designer.bat"
• Setup  ---->  C:\OSGeo4W\bin\bgspawn.exe "C:\OSGeo4W\bin\setup.bat"
• SAGA GIS 9.3.1  ---->  C:\OSGeo4W\bin\bgspawn.exe "C:\OSGeo4W\bin\saga_gui.bat"

uses bgspawn to the batch jobs, which has the advantage that there is no command line window flashing up when a desktop application starts.