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  • Caution
  • Code example
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Overview
WLanguage supports Python functions in native mode (for more details, see Python: Native calls). You can also execute Python functions via WLanguage functions.
Several functions are available:
PythonAddPathAdds the path to a directory or the path to the virtual environment to search for Python modules.
PythonExecuteExecutes a function present in a Python module.
PythonInitializeSpecifies the location of the Python DLL to be loaded.
PythonTerminateUnloads the Python DLL and frees memory.

Caution

  • The ".py" modules must be accessible on disk, in the folder of the deployed executable, or in the location specified with PythonAddPath. The ".py" modules cannot be found if they are embedded in the executable library.
  • Python is case-sensitive. The module and function names must be written using correct upper and lower case characters.
Code example
// Initialize the Python interpreter
PythonInitialize(PYTHON_INSTALL_PATH + "\Python39\python3.dll")
// Declare the import paths of the modules used
PythonAddPath("D:\source.test\pythonProject\venv\Lib\site-packages")
PythonAddPath("D:\source.test\pythonProject")
// Solve 5x³+x²-3x+2=0
sEquation is string = "5*x**3+x**2-3*x+2"
sListRoot is string = PythonExécute("main", "solver", sEquation)
nNbRoot is int = StringCount(sListRoot, ",") + 1
Trace("The ""[%sEquation%]"" equation admits [%nNbRoot%] roots:")
FOR n = 1 _TO_ nNbRoot
Trace("r[%n%] = [%ExtractString(sListRoot, n, "", "")%]")
END
Related Examples:
WD Python Training (WINDEV): WD Python
[ + ] This example shows how to run Python code in WINDEV applications.
Prerequisite: Python 3 must be installed on the computer. To get Python 3, go to http://legacy.python.org/download/
Minimum version required
  • Version 27
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