Fix autopep8 config

.travis.yml

@@ -57,7 +57,7 @@ install:
 
 script:
   - flake8
-  - autopep8 -r . --global-config .pep8 --diff | tee check_autopep8
+  - autopep8 -r . --diff | tee check_autopep8
   - test ! -s check_autopep8
   - cd tests
   - CHAINER_TEST_GPU_LIMIT=0 pytest -m "not slow and not cudnn and not ideep" chainer_tests

docs/source/contribution.rst

@@ -215,12 +215,12 @@ We use `PEP 8 <https://www.python.org/dev/peps/pep-0008/>`_ and a part of `OpenS
 To check your code, use ``autopep8`` and ``flake8`` command installed by ``hacking`` package::
 
   $ pip install autopep8 hacking
-  $ autopep8 --global-config .pep8 path/to/your/code.py
+  $ autopep8 path/to/your/code.py
   $ flake8 path/to/your/code.py
 
 The ``autopep8`` supports automatically correct Python code to conform to the PEP 8 style guide::
 
-  $ autopep8 --in-place --global-config .pep8 path/to/your/code.py
+  $ autopep8 --in-place path/to/your/code.py
 
 The ``flake8`` command lets you know the part of your code not obeying our style guidelines.
 Before sending a pull request, be sure to check that your code passes the ``flake8`` checking.

setup.cfg

@@ -1,6 +1,9 @@
 [flake8]
 exclude = .eggs,*.egg,build,caffe_pb2.py,caffe_pb3.py,docs,.git
 
+[pep8]
+exclude = .eggs,*.egg,build,caffe_pb2.py,caffe_pb3.py,docs,.git
+
 [tool:pytest]
 filterwarnings= ignore::FutureWarning
                 error::DeprecationWarning