o365 special subject mail download issue

[anna]

thanks, now I am facing new error now.

Error:
Traceback (most recent call last):
  File "eposDatadownload.py", line 28, in <module>
    if not os.path_exist(save_path):
AttributeError: module 'os' has no attribute 'path_exist'

tried with os.path_exists also.this path is already exits, if I am commenting that,getting below error

Error:
Traceback (most recent call last):
  File "eposDatadownload.py", line 30, in <module>
    with open(os.path.join_path(save_path,filename), 'wb') as fp:
AttributeError: module 'posixpath' has no attribute 'join_path'

whereas I am not getting error while checking indivisually

Python 3.6.0 (default, Jan 22 2018, 15:43:08)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> save_path = '/home/anna/scripts/ohfdata/downloads'
>>> print(os.path.exists(save_path))
True