vppapigen: add assert for python version
The recent introduction of f-strings require  >=Python3.6
Fix a couple of pycodestyle warnings.
Type: fix
@@ -11,6 +11,8 @@ import os
import sys
from subprocess import Popen, PIPE
+assert sys.version_info >= (3, 6), \
+ "Not supported Python version: {}".format(sys.version)
log = logging.getLogger('vppapigen')
# Ensure we don't leave temporary files around
@@ -285,7 +287,7 @@ class Define():
self.options[b.option] = b.value
remove.append(b)
- block = [x for x in block if not x in remove]
+ block = [x for x in block if x not in remove]
self.block = block
self.vla = vla_is_last_check(name, block)
self.crc = str(block).encode()
