Fix Python 2 incompatibilty in ndimage_utils by importing division from future

Author: Ludwig Schubert

lucid/misc/io/reading.py

@@ -28,15 +28,14 @@
 import os
 import re
 import logging
-from urllib.parse import urlparse, urljoin
+from urllib.parse import urlparse
 from future.moves.urllib import request
 from tensorflow import gfile
 from tempfile import gettempdir
-from io import BytesIO, StringIO
 import gc
 from filelock import FileLock
 
-from lucid.misc.io.writing import write, write_handle
+from lucid.misc.io.writing import write_handle
 
 
 # create logger with module name, e.g. lucid.misc.io.reading
@@ -113,7 +112,7 @@ def read_handle(url, cache=None, mode="rb"):
         elif scheme in ("gs"):
             handle = _handle_gfile(url, mode=mode)
         else:
-            handle = os.open(url, mode=mode)
+            handle = open(url, mode=mode)
 
     yield handle
     handle.close()

lucid/misc/ndimage_utils.py

@@ -1,3 +1,18 @@
+# Copyright 2019 The Lucid Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+from __future__ import absolute_import, division, print_function
 import numpy as np
 from scipy import ndimage
 

lucid/misc/tfutil.py

@@ -1,9 +1,24 @@
+# Copyright 2019 The Lucid Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+
 import tensorflow as tf
 
 
 def create_session(target='', timeout_sec=10):
   '''Create an intractive TensorFlow session.
-  
+
   Helper function that creates TF session that uses growing GPU memory
   allocation and opration timeout. 'allow_growth' flag prevents TF
   from allocating the whole GPU memory an once, which is useful
@@ -14,4 +29,3 @@ def create_session(target='', timeout_sec=10):
   config.gpu_options.allow_growth = True
   config.operation_timeout_in_ms = int(timeout_sec*1000)
   return tf.InteractiveSession(target=target, graph=graph, config=config)
-