Thanks for your answer @Schoen
Unfortunately, when trying to “import io” or “import _io” in a python2.7 terminal, everything worked successfully.
mlp@MyLittlePC ~ % python2.7
Python 2.7.9 (default, Mar 1 2015, 12:57:24)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import io
>>> import _io
>>>
I don’t know what else could I do about this.
I’ve seen on github a “letsencrypt-nosudo” project that only generates a cert., guess I’ll have to go with it and automate it with cron.
Thanks for your help