Enum module handles "name" member incorrectly.
1. "name" can't be used as a member when decorated with unique:

>>> import enum
>>> @enum.unique
... class A(enum.IntEnum):
...     a = 1
...     name = 2
...
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "C:\Python27\Lib\site-packages\enum\__init__.py", line 835, in unique
    (enumeration, duplicate_names)
ValueError: duplicate names found in <enum 'A'>: a -> A.name, name -> A.name

2. Without unique the names are assigned incorrectly:

>>> class A(enum.IntEnum):
...     a = 1
...     name = 2
...
>>> A.__members__['a'].name
<A.name: 2>
>>> A.__members__['name'].name
<A.name: 2>

(Just for reference - spotted first on Python 2.7 + enum34 backports)

The same happens for value property, making the bug quite severe:

>>> class A(enum.IntEnum):
...     a = 1
...     value = 3
...
>>> A.__members__['a'].value
<A.value: 3>
>>> A.__members__['value'].value
<A.value: 3>

I believe this comment is related:
# _RouteClassAttributeToGetattr is used to provide access to the `name`
# and `value` properties of enum members while keeping some measure of
# protection from modification, while still allowing for an enumeration
# to have members named `name` and `value`.  This works because enumeration
# members are not set directly on the enum class -- __getattr__ is
# used to look them up.


Platform: Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:14:34) [MSC v.1900 32 bit (Intel)] on win32

As a workaround, one can:
1. Rename the fields to not use name/value names
2. Use Enum instead of IntEnum, which somehow doesn't have this bug.

It turns out that enum34 backports module was the culprit (it was first on search path). When using enum native module, everything works as expected:

> c:\Python\Python36-32\python.exe -I
Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:14:34) [MSC v.1900 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import enum
>>> enum
<module 'enum' from 'c:\\Python\\Python36-32\\lib\\enum.py'>
>>> @enum.unique
... class A(enum.IntEnum):
...     a = 1
...     name = 2
...     value = 3
...
>>> exit()

> c:\Python\Python36-32\python.exe
Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:14:34) [MSC v.1900 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import enum
>>> enum
<module 'enum' from 'C:\\Python27\\Lib\\site-packages\\enum\\__init__.py'>
>>> @enum.unique
... class A(enum.IntEnum):
...     a = 1
...     name = 2
...     value = 3
...
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "C:\Python27\Lib\site-packages\enum\__init__.py", line 835, in unique
    (enumeration, duplicate_names)
ValueError: duplicate names found in <enum 'A'>: a -> A.name, name -> A.name, value -> A.name

Sorry for the noise.