pi@hassbian:~/dingdang $ python dingdang.py
Traceback (most recent call last):
File "dingdang.py", line 11, in <module>
from client import tts
File "/home/pi/dingdang/client/tts.py", line 32, in <module>
from . import diagnose
File "/home/pi/dingdang/client/diagnose.py", line 10, in <module>
import pip.req
ImportError: No module named req