Ridding the world of a few wasteful imports.

10 files changed, 12 insertions, 24 deletions

diff --git a/lib/sqlalchemy/dialects/mssql/adodbapi.py b/lib/sqlalchemy/dialects/mssql/adodbapi.py
index 24fa22449..bba6e7343 100644
--- a/lib/sqlalchemy/dialects/mssql/adodbapi.py
+++ b/lib/sqlalchemy/dialects/mssql/adodbapi.py
@@ -2,6 +2,7 @@
 The adodbapi dialect is not implemented for 0.6 at this time.
 
 """
+import datetime
 from sqlalchemy import types as sqltypes, util
 from sqlalchemy.dialects.mssql.base import MSDateTime, MSDialect
 import sys
diff --git a/lib/sqlalchemy/dialects/mssql/base.py b/lib/sqlalchemy/dialects/mssql/base.py
index 028322677..df8bfd4bd 100644
--- a/lib/sqlalchemy/dialects/mssql/base.py
+++ b/lib/sqlalchemy/dialects/mssql/base.py
@@ -118,20 +118,19 @@ Known Issues
   SQL Server 2005
 
 """
-import datetime, decimal, inspect, operator, sys, re
-import itertools
+import datetime, operator, re
 
 from sqlalchemy import sql, schema as sa_schema, exc, util
 from sqlalchemy.sql import select, compiler, expression, \
                             operators as sql_operators, \
-                            functions as sql_functions, util as sql_util
+                            util as sql_util
 from sqlalchemy.engine import default, base, reflection
 from sqlalchemy import types as sqltypes
-from sqlalchemy import processors
 from sqlalchemy.types import INTEGER, BIGINT, SMALLINT, DECIMAL, NUMERIC, \
                                 FLOAT, TIMESTAMP, DATETIME, DATE, BINARY,\
                                 VARBINARY, BLOB
 
+
 from sqlalchemy.dialects.mssql import information_schema as ischema
 
 MS_2008_VERSION = (10,)
diff --git a/lib/sqlalchemy/dialects/mssql/information_schema.py b/lib/sqlalchemy/dialects/mssql/information_schema.py
index 4dd6436cd..7e67f96bb 100644
--- a/lib/sqlalchemy/dialects/mssql/information_schema.py
+++ b/lib/sqlalchemy/dialects/mssql/information_schema.py
@@ -1,6 +1,6 @@
 # TODO: should be using the sys. catalog with SQL Server, not information schema
 
-from sqlalchemy import Table, MetaData, Column, ForeignKey
+from sqlalchemy import Table, MetaData, Column
 from sqlalchemy.types import String, Unicode, Integer, TypeDecorator
 
 ischema = MetaData()
diff --git a/lib/sqlalchemy/dialects/mssql/mxodbc.py b/lib/sqlalchemy/dialects/mssql/mxodbc.py
index 64e4ab9db..2f2200323 100644
--- a/lib/sqlalchemy/dialects/mssql/mxodbc.py
+++ b/lib/sqlalchemy/dialects/mssql/mxodbc.py
@@ -45,15 +45,11 @@ of ``False`` will uncondtionally use string-escaped parameters.
 
 """
 
-import re
-import sys
 
 from sqlalchemy import types as sqltypes
-from sqlalchemy import util
 from sqlalchemy.connectors.mxodbc import MxODBCConnector
 from sqlalchemy.dialects.mssql.pyodbc import MSExecutionContext_pyodbc
-from sqlalchemy.dialects.mssql.base import (MSExecutionContext, MSDialect, 
-                                            MSSQLCompiler,
+from sqlalchemy.dialects.mssql.base import (MSDialect, 
                                             MSSQLStrictCompiler,
                                             _MSDateTime, _MSDate, TIME)
 
diff --git a/lib/sqlalchemy/dialects/postgresql/base.py b/lib/sqlalchemy/dialects/postgresql/base.py
index 72b58a71c..ee0277b67 100644
--- a/lib/sqlalchemy/dialects/postgresql/base.py
+++ b/lib/sqlalchemy/dialects/postgresql/base.py
@@ -87,11 +87,9 @@ option to the Index constructor::
 
 import re
 
-from sqlalchemy import schema as sa_schema
 from sqlalchemy import sql, schema, exc, util
-from sqlalchemy.engine import base, default, reflection
+from sqlalchemy.engine import default, reflection
 from sqlalchemy.sql import compiler, expression, util as sql_util
-from sqlalchemy.sql import operators as sql_operators
 from sqlalchemy import types as sqltypes
 
 try:
diff --git a/lib/sqlalchemy/dialects/postgresql/pg8000.py b/lib/sqlalchemy/dialects/postgresql/pg8000.py
index 3afa06eab..0896c63b8 100644
--- a/lib/sqlalchemy/dialects/postgresql/pg8000.py
+++ b/lib/sqlalchemy/dialects/postgresql/pg8000.py
@@ -21,7 +21,6 @@ Passing data from/to the Interval type is not supported as of
 yet.
 
 """
-from sqlalchemy.engine import default
 from sqlalchemy import util, exc
 from sqlalchemy.util.compat import decimal
 from sqlalchemy import processors
diff --git a/lib/sqlalchemy/dialects/postgresql/psycopg2.py b/lib/sqlalchemy/dialects/postgresql/psycopg2.py
index b3f42c330..7edf1e16a 100644
--- a/lib/sqlalchemy/dialects/postgresql/psycopg2.py
+++ b/lib/sqlalchemy/dialects/postgresql/psycopg2.py
@@ -91,9 +91,8 @@ import logging
 from sqlalchemy import util, exc
 from sqlalchemy.util.compat import decimal
 from sqlalchemy import processors
-from sqlalchemy.engine import base, default
+from sqlalchemy.engine import base
 from sqlalchemy.sql import expression
-from sqlalchemy.sql import operators as sql_operators
 from sqlalchemy import types as sqltypes
 from sqlalchemy.dialects.postgresql.base import PGDialect, PGCompiler, \
                                 PGIdentifierPreparer, PGExecutionContext, \
diff --git a/lib/sqlalchemy/dialects/postgresql/pypostgresql.py b/lib/sqlalchemy/dialects/postgresql/pypostgresql.py
index 9abdffb6e..5dcf884f7 100644
--- a/lib/sqlalchemy/dialects/postgresql/pypostgresql.py
+++ b/lib/sqlalchemy/dialects/postgresql/pypostgresql.py
@@ -7,7 +7,6 @@ URLs are of the form ``postgresql+pypostgresql://user@password@host:port/dbname[
 
 
 """
-from sqlalchemy.engine import default
 from sqlalchemy import util
 from sqlalchemy import types as sqltypes
 from sqlalchemy.dialects.postgresql.base import PGDialect, PGExecutionContext
diff --git a/lib/sqlalchemy/dialects/sqlite/base.py b/lib/sqlalchemy/dialects/sqlite/base.py
index 1ab5173fe..44115e7d2 100644
--- a/lib/sqlalchemy/dialects/sqlite/base.py
+++ b/lib/sqlalchemy/dialects/sqlite/base.py
@@ -52,15 +52,13 @@ connection.   Valid values for this parameter are ``SERIALIZABLE`` and
 
 """
 
-import datetime, re, time
+import datetime, re
 
-from sqlalchemy import schema as sa_schema
-from sqlalchemy import sql, exc, pool, DefaultClause
+from sqlalchemy import sql, exc
 from sqlalchemy.engine import default, base, reflection
 from sqlalchemy import types as sqltypes
 from sqlalchemy import util
-from sqlalchemy.sql import compiler, functions as sql_functions
-from sqlalchemy.util import NoneType
+from sqlalchemy.sql import compiler
 from sqlalchemy import processors
 
 from sqlalchemy.types import BLOB, BOOLEAN, CHAR, DATE, DATETIME, DECIMAL,\
diff --git a/lib/sqlalchemy/dialects/sqlite/pysqlite.py b/lib/sqlalchemy/dialects/sqlite/pysqlite.py
index fa43262e2..fe4b5aec0 100644
--- a/lib/sqlalchemy/dialects/sqlite/pysqlite.py
+++ b/lib/sqlalchemy/dialects/sqlite/pysqlite.py
@@ -133,8 +133,7 @@ always represented by an actual database result string.
 """
 
 from sqlalchemy.dialects.sqlite.base import SQLiteDialect, DATETIME, DATE
-from sqlalchemy import schema, exc, pool
-from sqlalchemy.engine import default
+from sqlalchemy import exc, pool
 from sqlalchemy import types as sqltypes
 from sqlalchemy import util