Add flake8 tests

9 jobs from master in 5 minutes and 59 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Prepare
passed #19934
docker-host
build build-env image

00:00:02

passed #19936
docker-host
build phoenix 4.10 image

00:00:03

passed #19935
docker-host
build phoenix 4.11 image

00:00:03

passed #19938
docker-host
build phoenix 4.8 image

00:00:01

passed #19937
docker-host
build phoenix 4.9 image

00:00:03

 
  Test
failed #19940
docker
test phoenix 4.10

00:05:53

failed #19939
docker
test phoenix 4.11

00:05:47

failed #19942
docker
test phoenix 4.8

00:05:50

failed #19941
docker
test phoenix 4.9

00:05:47

 
Name Stage Failure
failed
test phoenix 4.11 Test There is an unknown failure, please try again
py35 runtests: PYTHONHASHSEED='3014031026'
py35 runtests: commands[0] | flake8
./examples/basic.py:12:21: E999 SyntaxError: invalid syntax
./phoenixdb/types.py:146:51: F821 undefined name 'long'
ERROR: InvocationError: '/builds/lukas/python-phoenixdb/.tox/py35/bin/flake8'
___________________________________ summary ____________________________________
py27: commands succeeded
ERROR: py35: commands failed
ERROR: Job failed: exit code 1
failed
test phoenix 4.9 Test There is an unknown failure, please try again
py35 runtests: PYTHONHASHSEED='1529138285'
py35 runtests: commands[0] | flake8
./examples/basic.py:12:21: E999 SyntaxError: invalid syntax
./phoenixdb/types.py:146:51: F821 undefined name 'long'
ERROR: InvocationError: '/builds/lukas/python-phoenixdb/.tox/py35/bin/flake8'
___________________________________ summary ____________________________________
py27: commands succeeded
ERROR: py35: commands failed
ERROR: Job failed: exit code 1
failed
test phoenix 4.8 Test There is an unknown failure, please try again
py35 runtests: PYTHONHASHSEED='1588763807'
py35 runtests: commands[0] | flake8
./examples/basic.py:12:21: E999 SyntaxError: invalid syntax
./phoenixdb/types.py:146:51: F821 undefined name 'long'
ERROR: InvocationError: '/builds/lukas/python-phoenixdb/.tox/py35/bin/flake8'
___________________________________ summary ____________________________________
py27: commands succeeded
ERROR: py35: commands failed
ERROR: Job failed: exit code 1
failed
test phoenix 4.10 Test There is an unknown failure, please try again
py35 runtests: PYTHONHASHSEED='2796844003'
py35 runtests: commands[0] | flake8
./examples/basic.py:12:21: E999 SyntaxError: invalid syntax
./phoenixdb/types.py:146:51: F821 undefined name 'long'
ERROR: InvocationError: '/builds/lukas/python-phoenixdb/.tox/py35/bin/flake8'
___________________________________ summary ____________________________________
py27: commands succeeded
ERROR: py35: commands failed
ERROR: Job failed: exit code 1