visualization is now a package to avoid clashes with io.

cameo/visualization/__init__.py

@@ -0,0 +1,16 @@
+# Copyright 2015 Novo Nordisk Foundation Center for Biosustainability, DTU.
+#
+# 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 visualization import *

cameo/visualization.py → cameo/visualization/visualization.py

@@ -12,11 +12,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+__all__ = ['memoized', 'graph_to_svg', 'draw_knockout_result', 'inchi_to_svg']
+
 import json
 import logging
 import subprocess
 import tempfile
 from functools import partial
+from io import BytesIO
+
+import networkx as nx
 from escher import Builder
 
 import os
@@ -175,9 +180,7 @@ def inchi_to_svg(inchi, file=None):
 
 def graph_to_svg(g, layout=nx.spring_layout):
     """return the SVG of a matplotlib figure generated from a graph"""
-    import networkx as nx
     import matplotlib.pyplot as plt
-    from io import BytesIO
     layout = layout(g)
     fig=plt.figure(figsize=(8, 8))
     ax = fig.add_subplot(111)