flake8: Fix F401,F403

This commit fixes the following flake8 issues:

F401 'foo' imported but unused
F403 'from foo import *' used; unable to detect undefined names

Change-Id: I163224c65f54a2e495d6469c1c26a115ad192e23

gertty/alembic/versions/1cdd4e2e74c_add_revision_indexes.py

@@ -11,7 +11,6 @@ revision = '1cdd4e2e74c'
 down_revision = '4a802b741d2f'
 
 from alembic import op
-import sqlalchemy as sa
 
 
 def upgrade():

gertty/alembic/versions/2a11dd14665_fix_account_table.py

@@ -11,7 +11,6 @@ revision = '2a11dd14665'
 down_revision = '4cc9c46f9d8b'
 
 from alembic import op
-import sqlalchemy as sa
 
 
 def upgrade():

gertty/alembic/versions/56e48a4a064a_increase_status_field_width.py

@@ -10,7 +10,6 @@ Create Date: 2014-05-05 11:49:42.133569
 revision = '56e48a4a064a'
 down_revision = '44402069e137'
 
-from alembic import op
 import sqlalchemy as sa
 
 from gertty.dbsupport import sqlite_alter_columns

gertty/db.py

@@ -20,9 +20,9 @@ import threading
 import alembic
 import alembic.config
 import sqlalchemy
-from sqlalchemy import create_engine, MetaData, Table, Column, Integer, String, Boolean, DateTime, Text, select, func
+from sqlalchemy import create_engine, MetaData, Table, Column, Integer, String, Boolean, DateTime, Text
 from sqlalchemy.schema import ForeignKey
-from sqlalchemy.orm import mapper, sessionmaker, relationship, column_property, scoped_session
+from sqlalchemy.orm import mapper, sessionmaker, relationship, scoped_session
 from sqlalchemy.orm.session import Session
 from sqlalchemy.sql import exists
 from sqlalchemy.sql.expression import and_

gertty/search/parser.py

@@ -16,12 +16,12 @@ import datetime
 import re
 
 import ply.yacc as yacc
-from sqlalchemy.sql.expression import and_, or_, not_, exists, select
+from sqlalchemy.sql.expression import and_, or_, not_, select
 
 import gertty.db
 import gertty.search
 
-from tokenizer import tokens
+from tokenizer import tokens  # NOQA
 
 def SearchParser():
     precedence = (  # NOQA

gertty/view/change.py

@@ -19,7 +19,6 @@ import urlparse
 
 import urwid
 
-from gertty import gitrepo
 from gertty import keymap
 from gertty import mywid
 from gertty import sync

gertty/view/change_list.py

@@ -18,7 +18,6 @@ import logging
 import urwid
 
 from gertty import keymap
-from gertty import mywid
 from gertty import sync
 from gertty.view import change as view_change
 from gertty.view import mouse_scroll_decorator

gertty/view/project_list.py

@@ -17,7 +17,6 @@ import logging
 import urwid
 
 from gertty import keymap
-from gertty import mywid
 from gertty import sync
 from gertty.view import change_list as view_change_list
 from gertty.view import mouse_scroll_decorator

gertty/view/side_diff.py

@@ -12,15 +12,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import datetime
-import logging
-
 import urwid
 
 from gertty import keymap
-from gertty import mywid
-from gertty import gitrepo
-from gertty.view.diff import *
+from gertty.view.diff import BaseDiffComment, BaseDiffCommentEdit, BaseDiffLine
+from gertty.view.diff import BaseFileHeader, BaseFileReminder, BaseDiffView
+from gertty.view.diff import LineContext
 
 LN_COL_WIDTH = 5
 

gertty/view/unified_diff.py

@@ -13,14 +13,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import datetime
-import logging
-
 import urwid
 
-from gertty import mywid
 from gertty import gitrepo
-from gertty.view.diff import *
+from gertty.view.diff import BaseDiffCommentEdit, BaseDiffComment, BaseDiffLine
+from gertty.view.diff import BaseFileHeader, BaseFileReminder, BaseDiffView
+from gertty.view.diff import LineContext
 
 LN_COL_WIDTH = 5
 

tox.ini

@@ -31,6 +31,6 @@ deps = flake8
 commands = {posargs}
 
 [flake8]
-ignore = W,E,F401,F403
+ignore = W,E
 show-source = True
 exclude = .venv,.tox,dist,doc,build,*.egg