Bye Travis, Hi PEP8 Speaks

.pep8speaks.yml

+scanner:
+    diff_only: True
+    linter: flake8
+
+flake8:
+    ignore:
+      - E402
+      - E501
+      - W504
+    count: False
+    show-source: False
+    statistics: False
+    hang-closing: False
+
+no_blank_comment: True

.travis.yml

-language: python
-python:
-    - 3.8
-
-install:
-    - sudo apt-get -qq update
-    - sudo apt-get -y install git
-    - pip3 install flake8
-
-script: .travis/flake8.sh

.travis/flake8.sh

-#!/bin/sh
-
-set -x
-
-# Run pep8 on all .py files in all subfolders
-# We must ignore E402 module level import not at top of file
-# because of use case sys.path.append('..'); import <module>
-
-tmpafter=$(mktemp)
-find src -name \*.py -exec flake8 --ignore=E402,E501,W504 {} + | egrep -v "alembic/versions/|usr/local/share/pysnmp/mibs/" > $tmpafter
-num_errors_after=`cat $tmpafter | wc -l`
-echo $num_errors_after
-
-if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then
-git checkout HEAD~
-else
-git remote set-branches origin ${TRAVIS_BRANCH}
-git fetch --depth 1 origin ${TRAVIS_BRANCH}
-git checkout ${TRAVIS_BRANCH}
-fi
-
-tmpbefore=$(mktemp)
-find src -name \*.py -exec flake8 --ignore=E402,E501,W504 {} + | egrep -v "alembic/versions/|usr/local/share/pysnmp/mibs/" > $tmpbefore
-num_errors_before=`cat $tmpbefore | wc -l`
-echo $num_errors_before
-
-
-if [ $num_errors_after -gt $num_errors_before ]; then
-	echo "New Flake8 errors were introduced:"
-	diff -u $tmpbefore $tmpafter
-	exit 1
-fi
-