add ability to specify python version

src/interface.jl

@@ -4,8 +4,13 @@ module interface
 export agent, addNewMessage, clearMessage, removeLatestMsg, generatePrompt_tokenPrefix,
         generatePrompt_tokenSuffix
 
-using JSON3, DataStructures, Dates, PythonCall
+using JSON3, DataStructures, Dates
 
+# Ref: https://github.com/JuliaPy/PythonCall.jl/issues/252
+ENV["JULIA_CONDAPKG_BACKEND"] = "Null"
+systemPython = split(read(`which python`, String), "\n")[1]
+ENV["JULIA_PYTHONCALL_EXE"] = systemPython # find python location with $> which python  ex. raw"/root/conda/bin/python"
+using PythonCall
 const py_agents = PythonCall.pynew()
 const py_llms = PythonCall.pynew()
 function __init__()