fix linter errors in etcdb/etcddate.py

[akuzminsky]

• Etcd Database Driver version: 1.0.3

Description

pylint fails on etcdb/etcddate.py

What I Did

$ pylint etcdb/etcddate.py
************* Module etcdb.etcddate
C:  1, 0: Missing module docstring (missing-docstring)
R:  1, 0: Too few public methods (0/2) (too-few-public-methods)


Report
======
5 statements analysed.

Statistics by type
------------------

+---------+-------+-----------+-----------+------------+---------+
|type     |number |old number |difference |%documented |%badname |
+=========+=======+===========+===========+============+=========+
|module   |1      |NC         |NC         |0.00        |0.00     |
+---------+-------+-----------+-----------+------------+---------+
|class    |1      |NC         |NC         |100.00      |0.00     |
+---------+-------+-----------+-----------+------------+---------+
|method   |1      |NC         |NC         |100.00      |0.00     |
+---------+-------+-----------+-----------+------------+---------+
|function |0      |NC         |NC         |0           |0        |
+---------+-------+-----------+-----------+------------+---------+



Raw metrics
-----------

+----------+-------+------+---------+-----------+
|type      |number |%     |previous |difference |
+==========+=======+======+=========+===========+
|code      |6      |66.67 |NC       |NC         |
+----------+-------+------+---------+-----------+
|docstring |3      |33.33 |NC       |NC         |
+----------+-------+------+---------+-----------+
|comment   |0      |0.00  |NC       |NC         |
+----------+-------+------+---------+-----------+
|empty     |0      |0.00  |NC       |NC         |
+----------+-------+------+---------+-----------+



Duplication
-----------

+-------------------------+------+---------+-----------+
|                         |now   |previous |difference |
+=========================+======+=========+===========+
|nb duplicated lines      |0     |NC       |NC         |
+-------------------------+------+---------+-----------+
|percent duplicated lines |0.000 |NC       |NC         |
+-------------------------+------+---------+-----------+



Messages by category
--------------------

+-----------+-------+---------+-----------+
|type       |number |previous |difference |
+===========+=======+=========+===========+
|convention |1      |NC       |NC         |
+-----------+-------+---------+-----------+
|refactor   |1      |NC       |NC         |
+-----------+-------+---------+-----------+
|warning    |0      |NC       |NC         |
+-----------+-------+---------+-----------+
|error      |0      |NC       |NC         |
+-----------+-------+---------+-----------+



Messages
--------

+-----------------------+------------+
|message id             |occurrences |
+=======================+============+
|too-few-public-methods |1           |
+-----------------------+------------+
|missing-docstring      |1           |
+-----------------------+------------+



Global evaluation
-----------------
Your code has been rated at 6.00/10