BUG Ignore irrelevant warning from tensorflow v1.4 (civisanalytics#52)

This warning happens at import time. It doesn't indicate a problem and should be ignored.

Author: Stephen Hoover

CHANGELOG.md

@@ -36,6 +36,7 @@ Version number changes (major.minor.micro) in this package denote the following:
 
 ### Fixed
 - Enabled widgetsnbextension so that ipywidgets works.
+- Suppress irrelevant warning from tensorflow v1.4
 
 ## [3.3.0] - 2017-11-17
 ### Package Updates

Dockerfile

@@ -105,6 +105,13 @@ RUN jupyter nbextension enable --py widgetsnbextension
 # https://github.com/joblib/joblib/blob/0.11/joblib/parallel.py#L328L342
 ENV JOBLIB_TEMP_FOLDER=/tmp
 
+# Filter out irrelevant warnings.
+# This section should be removed when it's no longer needed.
+# As of container version 4.0.0, it filters a tensorflow warning
+# which should go away with tensorflow v1.5.
+RUN mkdir -p /root/.local/lib/python3.6/site-packages
+COPY warningsfilter.py /root/.local/lib/python3.6/site-packages/usercustomize.py
+
 ENV VERSION=4.0.0 \
     VERSION_MAJOR=4 \
     VERSION_MINOR=0 \

warningsfilter.py

@@ -0,0 +1,5 @@
+import warnings
+
+# This warning is raised from tensorflow v1.4 at import time.
+# It's irrelevant and should be ignored.
+warnings.filterwarnings('ignore', "compiletime version 3.5 of module 'tensorflow.python.framework.fast_tensor_util' does not match runtime version 3.6", category=RuntimeWarning)