Pymc3 theano import failure - theano

Question

I have been unable to identify the issue with Pymc3's inability to correctly run Theano. I have also been unable to find a satisfactory answer anywhere else online. I am working in Mac OSX Mojave using Anaconda and Python 3.6. I am trying to run the code on a Jupyter Notebook from "Probabilistic Programming and Bayesian Methods for Hackers".
https://nbviewer.jupyter.org/github/CamDavidsonPilon/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers/blob/master/Chapter1_Introduction/Ch1_Introduction_PyMC3.ipynb
Code breaks with the first attempt to utilize Pymc3:
import pymc3 as pm
import theano.tensor as tt
with pm.Model() as model:
alpha = 1.0/count_data.mean() # Recall count_data is the
# variable that holds our txt counts
lambda_1 = pm.Exponential("lambda_1", alpha)
lambda_2 = pm.Exponential("lambda_2", alpha)
tau = pm.DiscreteUniform("tau", lower=0, upper=n_count_data - 1)
Error code follows, below. Thanks in advance.
ImportError Traceback (most recent call last)
/anaconda3/lib/python3.6/site-packages/theano/gof/lazylinker_c.py in <module>
80 version,
---> 81 actual_version, force_compile, _need_reload))
82 except ImportError:
ImportError: Version check of the existing lazylinker compiled file. Looking for version 0.211, but found None. Extra debug information: force_compile=False, _need_reload=True
During handling of the above exception, another exception occurred:
ImportError Traceback (most recent call last)
/anaconda3/lib/python3.6/site-packages/theano/gof/lazylinker_c.py in <module>
104 version,
--> 105 actual_version, force_compile, _need_reload))
106 except ImportError:
ImportError: Version check of the existing lazylinker compiled file. Looking for version 0.211, but found None. Extra debug information: force_compile=False, _need_reload=True
During handling of the above exception, another exception occurred:
Exception Traceback (most recent call last)
/anaconda3/lib/python3.6/site-packages/theano/gof/vm.py in <module>
673 raise theano.gof.cmodule.MissingGXX('lazylinker will not be imported if theano.config.cxx is not set.')
--> 674 from . import lazylinker_c
675
/anaconda3/lib/python3.6/site-packages/theano/gof/lazylinker_c.py in <module>
139 cmodule.GCC_compiler.compile_str(dirname, code, location=loc,
--> 140 preargs=args)
141 # Save version into the __init__.py file.
/anaconda3/lib/python3.6/site-packages/theano/gof/cmodule.py in compile_str(module_name, src_code, location, include_dirs, lib_dirs, libs, preargs, py_module, hide_symbols)
2398 raise Exception('Compilation failed (return status=%s): %s' %
-> 2399 (status, compile_stderr.replace('\n', '. ')))
2400 elif config.cmodule.compilation_warning and compile_stderr:
Exception: Compilation failed (return status=1): In file included from /Users/kthln/.theano/compiledir_Darwin-18.7.0-x86_64-i386-64bit-i386-3.6.9-64/lazylinker_ext/mod.cpp:1:. In file included from /anaconda3/include/python3.6m/Python.h:25:. /anaconda3/bin/../include/c++/v1/stdio.h:108:15: fatal error: 'stdio.h' file not found. #include_next <stdio.h>. ^~~~~~~~~. 1 error generated..
During handling of the above exception, another exception occurred:
AttributeError Traceback (most recent call last)
<ipython-input-48-f2e1580aa39f> in <module>
1 import pymc3 as pm
----> 2 import theano.tensor as tt
3
4
5 with pm.Model() as model:
/anaconda3/lib/python3.6/site-packages/theano/__init__.py in <module>
108 object2, utils)
109
--> 110 from theano.compile import (
111 SymbolicInput, In,
112 SymbolicOutput, Out,
/anaconda3/lib/python3.6/site-packages/theano/compile/__init__.py in <module>
10 from theano.compile.function_module import *
11
---> 12 from theano.compile.mode import *
13
14 from theano.compile.io import *
/anaconda3/lib/python3.6/site-packages/theano/compile/mode.py in <module>
9 import theano
10 from theano import gof
---> 11 import theano.gof.vm
12 from theano import config
13 from six import string_types
/anaconda3/lib/python3.6/site-packages/theano/gof/vm.py in <module>
681 except ImportError:
682 pass
--> 683 except (OSError, theano.gof.cmodule.MissingGXX) as e:
684 # OSError happens when g++ is not installed. In that case, we
685 # already changed the default linker to something else then CVM.
AttributeError: module 'theano' has no attribute 'gof'

Answer 1

Disregard. I noticed with an update I was running Python 3.7. Set up a separate conda env with Python 3.6 and it works fine.