Traceback (most recent call last):


 "./esptool.py", line 35, in <module>

import serial.tools.list_ports as list_ports
ImportError: No module named serial.tools.list_ports

Traceback (most recent call last):


 "/opt/eff.org/certbot/venv/bin/letsencrypt", line 7, in <module>

from certbot.main import main


 "/opt/eff.org/certbot/venv/lib/python2.7/site-packages/certbot/main.py", line 3, in <module>

from __future__ import print_function
ImportError: No module named __future__
