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@@ -14,6 +14,7 @@ |
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import os
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import sys
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import sphinx
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+import six
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# If your extensions are in another directory, add it here. If the directory
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# is relative to the documentation root, use os.path.abspath to make it
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@@ -73,6 +74,16 @@ |
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raise ImportError("No module named Image - you need to install "
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"pillow to build the documentation")
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+if six.PY2:
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+ from distutils.spawn import find_executable
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+ has_dot = find_executable('dot') is not None
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+else:
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+ from shutil import which # Python >= 3.3
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+ has_dot = which('dot') is not None
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+if not has_dot:
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+ raise OSError(
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+ "No binary named dot - you need to install the Graph Visualization "
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+ "software (usually packaged as 'graphviz') to build the documentation")
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try:
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import matplotlib
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