Allow to run setup.py on not installed package dependencies

CHANGELOG.rst

@@ -1,8 +1,8 @@
 CHANGELOG
 =========
-
 Version 2.3.5
 -------------
+* Allow to run setup.py on not installed package (`__init__.py` imports fix).
 * Simplify code
 
 Version 2.3.4

logwrap/__init__.py

@@ -1,7 +1,7 @@
-#    Copyright 2016 Alexey Stepanov aka penguinolog
-
+#    Copyright 2016-2017 Alexey Stepanov aka penguinolog
+#
 #    Copyright 2016 Mirantis, Inc.
-
+#
 #    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
@@ -24,24 +24,30 @@
 
 from __future__ import absolute_import
 
-import six
+try:
+    import six
+
+    from ._repr_utils import PrettyFormat, pretty_repr, pretty_str
 
-from ._repr_utils import PrettyFormat, pretty_repr, pretty_str
+    __all__ = (
+        'logwrap',
+        'PrettyFormat',
+        'pretty_repr',
+        'pretty_str'
+    )
 
-__all__ = (
-    'logwrap',
-    'PrettyFormat',
-    'pretty_repr',
-    'pretty_str'
-)
+    # pylint: disable=ungrouped-imports, no-name-in-module
+    if six.PY34:
+        from ._log_wrap3 import logwrap, LogWrap, async_logwrap, AsyncLogWrap
 
-# pylint: disable=ungrouped-imports, no-name-in-module
-if six.PY34:
-    from ._log_wrap3 import logwrap, LogWrap, async_logwrap, AsyncLogWrap
+        __all__ += ('async_logwrap', 'AsyncLogWrap')
+    else:
+        from ._log_wrap2 import logwrap, LogWrap
+    # pylint: enable=ungrouped-imports, no-name-in-module
 
-    __all__ += ('async_logwrap', 'AsyncLogWrap')
-else:
-    from ._log_wrap2 import logwrap, LogWrap
-# pylint: enable=ungrouped-imports, no-name-in-module
+except ImportError:
+    # Package is not installed
+    pass
 
-__version__ = '2.3.4'
+__version__ = '2.3.5'
+__author__ = "Alexey Stepanov <penguinolog@gmail.com>"