fixed_ get_variable_name

bug fixed for issue #2224

Author: Junpeng Lao

pymc3/distributions/discrete.py

@@ -4,6 +4,7 @@
 import theano.tensor as tt
 from scipy import stats
 
+from pymc3.util import get_variable_name
 from .dist_math import bound, factln, binomln, betaln, logpow
 from .distribution import Discrete, draw_values, generate_samples, reshape_sampled
 from pymc3.math import tround

pymc3/distributions/mixture.py

@@ -1,6 +1,7 @@
 import numpy as np
 import theano.tensor as tt
 
+from pymc3.util import get_variable_name
 from ..math import logsumexp
 from .dist_math import bound
 from .distribution import Discrete, Distribution, draw_values, generate_samples

pymc3/distributions/multivariate.py

@@ -16,6 +16,7 @@
 from pymc3.math import tround
 from pymc3.theanof import floatX
 from . import transforms
+from pymc3.util import get_variable_name
 from .distribution import Continuous, Discrete, draw_values, generate_samples
 from ..model import Deterministic
 from .continuous import ChiSquared, Normal

pymc3/distributions/timeseries.py

@@ -1,6 +1,7 @@
 import theano.tensor as tt
 from theano import scan
 
+from pymc3.util import get_variable_name
 from . import multivariate
 from . import continuous
 from . import distribution