ImportError: cannot import name constants

Question

I\'m trying to run a simple piece of code using pyzmq. I am using Python 2.7 and pyzmq 14.5

$ python --version
Python 2.7.6
$ sudo find /usr -name "*pyzm         


        

Answer 1

so, what worked for me in this case is the following solution from Osiris from letsencrypt forum:

1. the problem is that you have 2 versions of certbot (in my case I understood that by command:

whereis certbot

the output was like this:

certbot: /usr/bin/certbot /usr/local/bin/certbot /usr/share/man/man1/certbot.1.gz

2. then I tried to renew both of them wiht the commands:

/usr/bin/certbot renew
/usr/local/bin/certbot renew

and I got the error:
An unexpected error occurred: ImportError: cannot import name 'constants'
...with the 2nd one!
so, I used the following command to remove this folder:
sudo rm usr/local/bin/certbot

Then the error was gone
Hope that helps

Answer 2

I encountered a similar problem. pip install --upgrade pyzmq did the trick for me