Fix some flake8 violations

1. Wrong use of 'noqa'. "# flake8: noqa" option disables all checks
for the whole file.
2. Remove exclusion of 'tools' and '*openstack/common*' in flake8 and
fix the violations.

Change-Id: I153e992ffd6a80e70a99d7066c503c34326c93ab
Closes-bug: #1540254

cinderclient/openstack/common/apiclient/base.py

@@ -456,7 +456,7 @@ class Resource(object):
 
     def __getattr__(self, k):
         if k not in self.__dict__:
-            #NOTE(bcwaldon): disallow lazy-loading if already loaded once
+            # NOTE(bcwaldon): disallow lazy-loading if already loaded once
             if not self.is_loaded():
                 self.get()
                 return self.__getattr__(k)

cinderclient/openstack/common/apiclient/fake_client.py

@@ -81,7 +81,7 @@ class FakeHTTPClient(client.HTTPClient):
     def __init__(self, *args, **kwargs):
         self.callstack = []
         self.fixtures = kwargs.pop("fixtures", None) or {}
-        if not args and not "auth_plugin" in kwargs:
+        if not args and "auth_plugin" not in kwargs:
             args = (None, )
         super(FakeHTTPClient, self).__init__(*args, **kwargs)
 

tools/colorizer.py

@@ -110,7 +110,7 @@ class _Win32Colorizer(object):
                                   win32console.FOREGROUND_INTENSITY)
         self.stream = stream
         self.screenBuffer = win32console.GetStdHandle(
-                win32console.STD_OUT_HANDLE)
+            win32console.STD_OUT_HANDLE)
         self._colors = {
             'normal': red | green | blue,
             'red': red | bold,
@@ -266,7 +266,7 @@ class NovaTestResult(testtools.TestResult):
         if not self.last_written or (self._now() - time).total_seconds() > 2.0:
             diff = 3.0
             while diff > 2.0:
-                classes =list(self.results)
+                classes = list(self.results)
                 oldest = min(classes, key=lambda x: self.last_time[x])
                 diff = (self._now() - self.last_time[oldest]).total_seconds()
                 self.writeTestCase(oldest)

tools/install_venv.py

@@ -22,7 +22,7 @@ import ConfigParser
 import os
 import sys
 
-import install_venv_common as install_venv  # flake8: noqa
+import install_venv_common as install_venv
 
 
 def print_help(project, venv, root):
@@ -42,7 +42,7 @@ def print_help(project, venv, root):
 
     $ %(root)s/tools/with_venv.sh <your command>
     """
-    print help % dict(project=project, venv=venv, root=root)
+    print (help % dict(project=project, venv=venv, root=root))
 
 
 def main(argv):

tox.ini

@@ -44,4 +44,4 @@ passenv = OS_*
 [flake8]
 show-source = True
 ignore = F811,F821,H306,H404,H405,E122,E123,E128,E251
-exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build,tools
+exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build