[#145] Reformatted rest of iota package for PEP-8.

Author: todofixthis

iota/exceptions.py

@@ -1,25 +1,36 @@
 # coding=utf-8
 from __future__ import absolute_import, division, print_function, \
-  unicode_literals
+    unicode_literals
+
+__all__ = [
+    'with_context',
+]
 
 
 def with_context(exc, context):
-  # type: (Exception, dict) -> Exception
-  """
-  Attaches a ``context`` value to an Exception.
+    # type: (Exception, dict) -> Exception
+    """
+    Attaches a ``context`` value to an Exception.
+
+    Before:
+
+    .. code-block:: python
 
-  Before::
+        exc = Exception('Frog blast the vent core!')
+        exc.context = { ... }
+        raise exc
 
-     exc = Exception('Frog blast the vent core!')
-     exc.context = { ... }
-     raise exc
+    After:
 
-  After::
+    .. code-block:: python
 
-     raise with_context(Exception('Frog blast the vent core!'), { ... })
-  """
-  if not hasattr(exc, 'context'):
-    exc.context = {}
+        raise with_context(
+            exc=Exception('Frog blast the vent core!'),
+            context={ ... },
+        )
+    """
+    if not hasattr(exc, 'context'):
+        exc.context = {}
 
-  exc.context.update(context)
-  return exc
+    exc.context.update(context)
+    return exc