Eclipse - pydev - Fatal Python error: Py_Initialize: Unable to get the locale encoding -

i have python 3 script invoking python 2.7.x script, using subprocess.popen.

myproc = subprocess.popen(          "/path/to/my/python/3/script",           stdout=subprocess.pipe,           stderr=subprocess.pipe,           cwd=mypwd,           shell=true) 

when debug script using eclipse , print out stderr see following issue:

fatal python error: py_initialize: unable locale encoding

the issue not seen when execute same code in script outside eclipse.

any solve appreciated!

same problem subprocess.check_call

i've solved mine passing env

subprocess.check_call(cmd,env={'path': '/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games',                                        'lang': 'it_it.utf-8',                                        }) 

i think pydev changes environment magic. not sure both path , lang needed.