R/zzz.R

In PythonInR: Use Python from Within R

.onLoad <- function(libname, pkgname) {
    # at the compile time a flag is set which can
    # be accessed by using the function isDllVersion 
    if ( !.Call( "isDllVersion") ){
        pyConnect()
    } else if ( nchar(Sys.getenv('PYTHON_EXE')) > 0 ) {
        pyConnect(pythonExePath=Sys.getenv('PYTHON_EXE'))
    }
  
    invisible(NULL)
}