how to use pythran add a myfunction from other py files?

[YuDe95]

toolsTep.py

def HelloWord():
    print('hello word')

testpythran.py

from calaTools.toolsTep import *
#pythran export callOtherPyFiles()
def callOtherPyFiles():
    HelloWord()

complie pythran testpythran.py

• CRITICAL :
  I am in trouble. Your input file does not seem to match Pythran's constraints...
• testpythran.py:

  None:None error: Module 'calaTools.toolsTep' not found.

when tow function in save file and it can find ,in diffrent file it occured those errors