## Script (Python) "getStudentId"
##bind container=container
##bind context=context
##bind namespace=
##bind script=script
##bind subpath=traverse_subpath
##parameters=
##title=
##
# $Id: getStudentId.py 1514 2007-03-02 23:26:27Z henrik $
"""
return StudentId from request
"""

ptls = context.REQUEST.get('PATH_INFO')
start = ptls.find('/students/')
if start < -1:
    return None
start += 10
student_id = ptls[start:start+7]
try:
    int(student_id[1:])
    return student_id
except:
    return None