how to check if python has already been initialized?

[jerome falken]

Is there any variable or way to check if the python environment has already been loaded? (that is, the environment "python" has already been invoked (in the current stata session), which resulted in loading the shared object or dynamic library into memory? simply put, has the user already ran python/end in the current session?

Thank you

[William Lisowski]

The python query command will provide you the information you need; it is documented as part of the output of help python.

. python query
------------------------------------------------------------------------------------------------
    Python Settings
      set python_exec      /usr/bin/python
      set python_userpath  

    Python system information
      initialized          no
      version              2.7.10
      architecture         64-bit
      library path         /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.
> 7/config/libpython2.7.dylib

. python
----------------------------------------------- python (type end to exit) ----------------------
>>> end
------------------------------------------------------------------------------------------------

. python query
------------------------------------------------------------------------------------------------
    Python Settings
      set python_exec      /usr/bin/python
      set python_userpath  

    Python system information
      initialized          yes
      version              2.7.10
      architecture         64-bit
      library path         /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.
> 7/config/libpython2.7.dylib

. return list

scalars:
        r(initialized) =  1

macros:
           r(execpath) : "/usr/bin/python"
            r(version) : "2.7.10"
               r(arch) : "64-bit"
            r(libpath) : "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/pytho.."
.

[jerome falken]

Perfect, I had not noticed the "initialized" setting.