remove dead code (related to pymongo2) + minor cleaning

mongoengine/document.py

@@ -816,11 +816,9 @@ class Document(six.with_metaclass(TopLevelDocumentMetaclass, BaseDocument)):
         index_spec = index_spec.copy()
         fields = index_spec.pop('fields')
         drop_dups = kwargs.get('drop_dups', False)
-        if IS_PYMONGO_3 and drop_dups:
+        if drop_dups:
             msg = 'drop_dups is deprecated and is removed when using PyMongo 3+.'
             warnings.warn(msg, DeprecationWarning)
-        elif not IS_PYMONGO_3:
-            index_spec['drop_dups'] = drop_dups
         index_spec['background'] = background
         index_spec.update(kwargs)
 
@@ -842,11 +840,9 @@ class Document(six.with_metaclass(TopLevelDocumentMetaclass, BaseDocument)):
         :param drop_dups: Was removed/ignored with MongoDB >2.7.5. The value
             will be removed if PyMongo3+ is used
         """
-        if IS_PYMONGO_3 and drop_dups:
+        if drop_dups:
             msg = 'drop_dups is deprecated and is removed when using PyMongo 3+.'
             warnings.warn(msg, DeprecationWarning)
-        elif not IS_PYMONGO_3:
-            kwargs.update({'drop_dups': drop_dups})
         return cls.create_index(key_or_list, background=background, **kwargs)
 
     @classmethod

mongoengine/queryset/base.py

@@ -626,7 +626,7 @@ class BaseQuerySet(object):
 
         queryset = self.clone()
         query = queryset._query
-        if not IS_PYMONGO_3 or not remove:
+        if not remove:
             update = transform.update(queryset._document, **update)
         sort = queryset._ordering
 
@@ -1090,7 +1090,7 @@ class BaseQuerySet(object):
         return queryset
 
     def timeout(self, enabled):
-        """Enable or disable the default mongod timeout when querying.
+        """Enable or disable the default mongod timeout when querying. (no_cursor_timeout option)
 
         :param enabled: whether or not the timeout is used
 
@@ -1531,17 +1531,6 @@ class BaseQuerySet(object):
 
     @property
     def _cursor_args(self):
-        if not IS_PYMONGO_3:
-            fields_name = 'fields'
-            cursor_args = {
-                'timeout': self._timeout,
-                'snapshot': self._snapshot
-            }
-            if self._read_preference is not None:
-                cursor_args['read_preference'] = self._read_preference
-            else:
-                cursor_args['slave_okay'] = self._slave_okay
-        else:
         fields_name = 'projection'
         # snapshot is not handled at all by PyMongo 3+
         # TODO: evaluate similar possibilities using modifiers
@@ -1551,6 +1540,7 @@ class BaseQuerySet(object):
         cursor_args = {
             'no_cursor_timeout': not self._timeout
         }
+
         if self._loaded_fields:
             cursor_args[fields_name] = self._loaded_fields.as_dict()
 

tests/queryset/queryset.py

@@ -3415,9 +3415,6 @@ class QuerySetTest(unittest.TestCase):
         self.assertEqual(query.count(), 3)
         self.assertEqual(query._query, {'$text': {'$search': 'brasil'}})
         cursor_args = query._cursor_args
-        if not IS_PYMONGO_3:
-            cursor_args_fields = cursor_args['fields']
-        else:
         cursor_args_fields = cursor_args['projection']
         self.assertEqual(
             cursor_args_fields, {'_text_score': {'$meta': 'textScore'}})
@@ -4511,11 +4508,7 @@ class QuerySetTest(unittest.TestCase):
         bars = list(Bar.objects(read_preference=ReadPreference.PRIMARY))
         self.assertEqual([], bars)
 
-        if not IS_PYMONGO_3:
+        self.assertRaises(TypeError, Bar.objects, read_preference='Primary')
-            error_class = ConfigurationError
-        else:
-            error_class = TypeError
-        self.assertRaises(error_class, Bar.objects, read_preference='Primary')
 
         # read_preference as a kwarg
         bars = Bar.objects(read_preference=ReadPreference.SECONDARY_PREFERRED)

tests/test_connection.py

@@ -23,9 +23,6 @@ from mongoengine.connection import (MongoEngineConnectionError, get_db,
 
 
 def get_tz_awareness(connection):
-    if not IS_PYMONGO_3:
-        return connection.tz_aware
-    else:
     return connection.codec_options.tz_aware
 
 
@@ -425,12 +422,6 @@ class ConnectionTest(unittest.TestCase):
         c.admin.authenticate("admin", "password")
         c.admin.command("createUser", "username", pwd="password", roles=["dbOwner"])
 
-        if not IS_PYMONGO_3:
-            self.assertRaises(
-                MongoEngineConnectionError, connect, 'testdb_uri_bad',
-                host='mongodb://test:password@localhost'
-            )
-
         connect("testdb_uri", host='mongodb://username:password@localhost/mongoenginetest')
 
         conn = get_connection()
@@ -641,10 +632,7 @@ class ConnectionTest(unittest.TestCase):
         self.assertEqual(len(mongo_connections.items()), 2)
         self.assertIn('t1', mongo_connections.keys())
         self.assertIn('t2', mongo_connections.keys())
-        if not IS_PYMONGO_3:
+
-            self.assertEqual(mongo_connections['t1'].host, 'localhost')
-            self.assertEqual(mongo_connections['t2'].host, '127.0.0.1')
-        else:
         # Handle PyMongo 3+ Async Connection
         # Ensure we are connected, throws ServerSelectionTimeoutError otherwise.
         # Purposely not catching exception to fail test if thrown.