Using QGIS - Update

 QGIS is a widely used, free and open source, GIS software package.  This is an update on how to use it with PyScripter.   I have used the currently latest version for Windows (3.42) but you can adapt the instructions to other recent versions of QGIS.

Create a command file "PyScripter-QGIS.cmd" with the following content:

@echo off

rem Adapt the following line to match your installation

set QGIS_ROOT=C:\Program Files\QGIS 3.42.0

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

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

@echo on

rem Set VSI cache to be used as buffer, see #6448

set VSI_CACHE=TRUE

set VSI_CACHE_SIZE=1000000

set GDAL_FILENAME_IS_UTF8=YES

set QT_PLUGIN_PATH=%OSGEO4W_ROOT%\apps\qgis\qtplugins;%OSGEO4W_ROOT%\apps\qt5\plugins

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

pushd "c:\Program Files\PyScripter"

rem Adapt the following line to match the python version that comes with QGIS

start "PyScripter" /B "PyScripter.exe" --PYTHON312 --PYTHONDLLPATH="%QGIS_ROOT%\apps\Python312"

popd

Save it anywhere you want and run it. 

Then in the PyScripter python interpreter you can do:

*** Python 3.12.9 (main, Feb  7 2025, 14:34:44) [MSC v.1938 64 bit (AMD64)] on win32. ***
*** Remote Python engine is active ***
>>> from qgis.core import *
>>> import qgis.utils
>>> from PyQt5.QtCore import QSettings
>>> 

That's it.

Using PyScripter with QGIS

This is a solution contributed by Andreas (github user name amr).  For a complete integration of PyScripter with QGIS you need two things:

1. Batch-File: The following is for the LTR-version of QGIS. It is a modified version of the existing python-qgis-ltr.bat in the folder "OSGeo4W\bin". Some changes were made to it, essentially using absolute paths to both the OSGeo4W and PyScripter installation folders. Please change the paths, if yours differ!

 

@echo off
:: path for OSGeo4W/QGIS
set O4W=C:\OSGeo4W
:: path for PyScripter
set PYSC=C:\Program Files\PyScripter

:: changed start procedure
call "%O4W%\bin\o4w_env.bat"
@echo off
:: add python dir to path
path %OSGEO4W_ROOT%\apps\qgis-ltr\bin;%OSGEO4W_ROOT%\apps\Python39;%PATH%
set QGIS_PREFIX_PATH=%OSGEO4W_ROOT:\=/%/apps/qgis-ltr
set GDAL_FILENAME_IS_UTF8=YES
rem Set VSI cache to be used as buffer, see #6448
set VSI_CACHE=TRUE
set VSI_CACHE_SIZE=1000000
set QT_PLUGIN_PATH=%OSGEO4W_ROOT%\apps\qgis-ltr\qtplugins;%OSGEO4W_ROOT%\apps\qt5\plugins
set PYTHONPATH=%OSGEO4W_ROOT%\apps\qgis-ltr\python;%PYTHONPATH%

:: start PyScripter
start "PyScripter" /B "%PYSC%\PyScripter.exe" --PYTHON39 --pythondllpath=%OSGEO4W_ROOT%\apps\python39 %*

2. Start-Script for the Python-Interpreter: It uses the path variable and adds each path to the DLL-search path. Store this as "sitecustomize.py" into the folder OSGeo4W\apps\Python39

#sitecustomize.py
import os
for p in os.getenv("PATH").split(";"):
    if os.path.exists(p):
        os.add_dll_directory(p)

Using PyScripter with QGIS

QGIS is a free and open source GIS System.  However it comes with an unusual setup.  To use it with Pyscripter you need to:

• copy  python3.exe and python36.dll (or python37.dll for recent versions) from the bin folder (osgeo4w\bin) to the python folder (osgeo4w\apps\Python36 or osgeo4w\apps\Python36)
• rename python3.exe to python.exe

Then the installation is similar to the ones described here.