Place __all__ on correct location

Author: insspb

flask_mongoengine/db_fields.py

@@ -1,16 +1,4 @@
 """Responsible for mongoengine fields extension, if WTFForms integration used."""
-from typing import Callable, List, Optional, Union
-
-try:
-    from wtforms import fields as wtf_fields
-    from wtforms import validators as wtf_validators
-except ImportError:
-    wtf_fields = None
-    wtf_validators = None
-
-
-from mongoengine import fields
-
 __all__ = [
     "WtfFieldMixin",
     "BinaryField",
@@ -53,6 +41,16 @@
     "URLField",
     "UUIDField",
 ]
+from typing import Callable, List, Optional, Union
+
+from mongoengine import fields
+
+try:
+    from wtforms import fields as wtf_fields
+    from wtforms import validators as wtf_validators
+except ImportError:
+    wtf_fields = None
+    wtf_validators = None
 
 
 class WtfFieldMixin: