Ошибка после первого примера программы Theano

Я новичок в theano и следую этому простому вводному упражнению в theano, которое можно найти здесь: http://deeplearning.net/software/theano/introduction.html#introduction

Идея состоит в том, чтобы просто объявить некоторые тензорные переменные и обернуть их в функцию, это самая простая вещь, которую вы могли бы сделать с помощью theano.

точный код:

import theano
from theano import tensor

# declare two symbolic floating-point scalars
a = tensor.dscalar()
b = tensor.dscalar()

# create a simple expression
c = a + b

# convert the expression into a callable object that takes (a,b)
# values as input and computes a value for c
f = theano.function([a,b], c)

# bind 1.5 to 'a', 2.5 to 'b', and evaluate 'c'
assert 4.0 == f(1.5, 2.5)

Однако я получаю эту трассировку:

Traceback (most recent call last):
  File "test.py", line 13, in <module>
    f = theano.function([a,b], c)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/compile/function.py", line 223, in function
    profile=profile)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/compile/pfunc.py", line 512, in pfunc
    on_unused_input=on_unused_input)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/compile/function_module.py", line 1312, in orig_function
    defaults)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/compile/function_module.py", line 1181, in create
    _fn, _i, _o = self.linker.make_thunk(input_storage=input_storage_lists)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/link.py", line 434, in make_thunk
    output_storage=output_storage)[:3]
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/vm.py", line 847, in make_all
    no_recycling))
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/op.py", line 606, in make_thunk
    output_storage=node_output_storage)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/cc.py", line 948, in make_thunk
    keep_lock=keep_lock)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/cc.py", line 891, in __compile__
    keep_lock=keep_lock)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/cc.py", line 1314, in cthunk_factory
    key = self.cmodule_key()
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/cc.py", line 1032, in cmodule_key
    c_compiler=self.c_compiler(),
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/cc.py", line 1090, in cmodule_key_
    sig.append('md5:' + theano.configparser.get_config_md5())
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/configparser.py", line 146, in get_config_md5
    ['%s = %s' % (cv.fullname, cv.__get__()) for cv in all_opts]))
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/configparser.py", line 146, in <listcomp>
    ['%s = %s' % (cv.fullname, cv.__get__()) for cv in all_opts]))
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/configparser.py", line 273, in __get__
    val_str = self.default()
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/tensor/blas.py", line 282, in default_blas_ldflags
    if GCC_compiler.try_flags(["-lblas"]):
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/cmodule.py", line 1852, in try_flags
    flags=flag_list, try_run=False)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/theano/gof/cmodule.py", line 1799, in try_compile_tmp
    os.write(fd, src_code)
TypeError: ('The following error happened while compiling the node', Elemwise{add,no_inplace}(<TensorType(float64, scalar)>, <TensorType(float64, scalar)>), '\n', "'str' does not support the buffer interface")

Моя единственная мысль заключается в том, что это может быть связано с python3, но это не должно быть так. Пожалуйста помоги.