Run flake8 instead of pep8 on Python 3.6

cclauss · QuLogic · commit 8535090dc3be · 2018-06-21T22:47:40.000-04:00
As discussed at #10938 (comment) _undefined names_ have [occurred often in the past](https://github.com/matplotlib/matplotlib/pulls?q=is%3Apr+author%3Acclauss+is%3Aclosed) and this change would help to avoid recurrence in the future.
diff --git a/.travis.yml b/.travis.yml
@@ -60,7 +60,7 @@ env:
     # still supported; this is tested by the first matrix entry.
     - PYTEST='pytest>=3.6'
     - PYTEST_COV=pytest-cov
-    - PYTEST_PEP8=
+    - PYTEST_FLAKE8=
     - PYTEST_TIMEOUT=pytest-timeout
     - SPHINX=sphinx
     # Variables controlling the build.
@@ -75,7 +75,7 @@ env:
     - OPENBLAS_NUM_THREADS=1
     - PYTHONFAULTHANDLER=1
     - PYTEST_ADDOPTS="-rawR --maxfail=50 --timeout=300 --durations=25 --cov-report= --cov=lib -n $NPROC"
-    - RUN_PEP8=
+    - RUN_FLAKE8=
 
 matrix:
   include:
@@ -100,8 +100,8 @@ matrix:
         - DELETE_FONT_CACHE=1
         - PANDAS='pandas<0.21.0'
         - JUPYTER='jupyter'
-        - PYTEST_PEP8=pytest-pep8
-        - PYTEST_ADDOPTS="$PYTEST_ADDOPTS --pep8"
+        - PYTEST_FLAKE8=pytest-flake8
+        - PYTEST_ADDOPTS="$PYTEST_ADDOPTS --flake8"
     - python: "nightly"
       env: PRE=--pre
     - os: osx
@@ -182,7 +182,7 @@ install:
         $PYTEST \
         $PYTEST_COV \
         pytest-faulthandler \
-        $PYTEST_PEP8 \
+        $PYTEST_FLAKE8 \
         pytest-rerunfailures \
         $PYTEST_TIMEOUT \
         pytest-xdist
diff --git a/pytest.ini b/pytest.ini
@@ -7,8 +7,9 @@ markers =
     network: Mark a test that uses the network.
     style: Set alternate Matplotlib style temporarily.
 
-pep8ignore =
-    * E111 E114 E115 E116 E121 E122 E123 E124 E125 E126 E127 E128 E129 E131 E226 E240 E241 E242 E243 E244 E245 E246 E247 E248 E249 E265 E266 E704 W503
+flake8-max-line-length = 80
+flake8-ignore =
+    * E111 E114 E115 E116 E121 E122 E123 E124 E125 E126 E127 E128 E129 E131 E226 E240 E241 E242 E243 E244 E245 E246 E247 E248 E249 E265 E266 E305 E306 E704 E722 E741 F401 F403 F811 F841 W503
 
     setup.py E402
     setupext.py E301 E302 E501
