Yes, when I try importing firedrake things go badly. See below.

(firedrake) fpoulin@amlt21:~/Desktop/Talks/10-ExperientialLearning/Notebooks$ python

Python 3.6.5 (default, Apr 1 2018, 05:46:30)

[GCC 7.3.0] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> import firedrake

Traceback (most recent call last):

File "<stdin>", line 1, in <module>

File "/home/fpoulin/software/firedrake/src/firedrake/firedrake/__init__.py", line 30, in <module>

import ufl

File "/home/fpoulin/software/firedrake/src/ufl/ufl/__init__.py", line 323, in <module>

from ufl.operators import rank, shape, \

File "/home/fpoulin/software/firedrake/src/ufl/ufl/operators.py", line 41, in <module>

from ufl.mathfunctions import Sqrt, Exp, Ln, Erf,\

File "/home/fpoulin/software/firedrake/src/ufl/ufl/mathfunctions.py", line 25, in <module>

import cmath

ModuleNotFoundError: No module named 'cmath'

------------------
Francis Poulin

Associate Dean, Undergraduate Studies
Professor
Department of Applied Mathematics
University of Waterloo

email:           fpoulin@uwaterloo.ca
Web:            https://uwaterloo.ca/poulin-research-group/
Telephone: +1 519 888 4567 x32637

From: firedrake-bounces@imperial.ac.uk <firedrake-bounces@imperial.ac.uk> on behalf of Lawrence Mitchell <wence@gmx.li>
Sent: Monday, October 22, 2018 8:58:35 AM
To: firedrake@imperial.ac.uk
Subject: Re: [firedrake] problems updating