chore: Use Python 3.7-Compatible Type hints (#19)

Co-authored-by: emilkholod <[email protected]>

Author: emilkholod

graphene_federation/extend.py

@@ -1,11 +1,11 @@
-from typing import Any, Callable
+from typing import Any, Callable, Dict
 
 from graphene import Schema
 
 from graphene_federation.utils import check_fields_exist_on_type, is_valid_compound_key
 
 
-def get_extended_types(schema: Schema) -> dict[str, Any]:
+def get_extended_types(schema: Schema) -> Dict[str, Any]:
     """
     Find all the extended types from the schema.
     They can be easily distinguished from the other type as

graphene_federation/inaccessible.py

@@ -1,11 +1,11 @@
-from typing import Any, Optional
+from typing import Any, Dict, Optional
 
 from graphene import Schema
 
 from graphene_federation.utils import get_attributed_fields
 
 
-def get_inaccessible_types(schema: Schema) -> dict[str, Any]:
+def get_inaccessible_types(schema: Schema) -> Dict[str, Any]:
     """
     Find all the inaccessible types from the schema.
     They can be easily distinguished from the other type as

graphene_federation/requires.py

@@ -1,11 +1,11 @@
-from typing import Union
+from typing import List, Union
 
 from graphene import Schema
 
 from graphene_federation.utils import get_attributed_fields
 
 
-def requires(field, fields: Union[str, list[str]]):
+def requires(field, fields: Union[str, List[str]]):
     """
     Mark the required fields for a given field.
     The input `fields` can be either a string or a list.

graphene_federation/service.py

@@ -1,4 +1,5 @@
 import re
+from typing import List
 
 from graphene.types.interface import InterfaceOptions
 from graphene.types.union import UnionOptions
@@ -31,7 +32,7 @@ def __init__(self, name, field):
         self.fields = {name: field}
 
 
-def convert_fields(schema: Schema, fields: list[str]) -> str:
+def convert_fields(schema: Schema, fields: List[str]) -> str:
     get_field_name = type_attribute_to_field_name(schema)
     return " ".join([get_field_name(field) for field in fields])
 

graphene_federation/shareable.py

@@ -1,12 +1,12 @@
-from typing import Any, Optional
+from typing import Any, Dict, Optional
 
 from graphene import Schema
 from graphene.types.interface import InterfaceOptions
 
 from graphene_federation.utils import get_attributed_fields
 
 
-def get_shareable_types(schema: Schema) -> dict[str, Any]:
+def get_shareable_types(schema: Schema) -> Dict[str, Any]:
     """
     Find all the extended types from the schema.
     They can be easily distinguished from the other type as

graphene_federation/utils.py

@@ -1,4 +1,4 @@
-from typing import Any, Callable
+from typing import Any, Callable, List, Tuple
 
 import graphene
 from graphene import Schema, ObjectType
@@ -43,7 +43,7 @@ def is_valid_compound_key(type_name: str, key: str, schema: Schema):
     key_document = parse(f"{{{key}}}")
 
     # List storing tuples of nodes in the key document with its parent types
-    key_nodes: list[tuple[Any, GrapheneObjectType]] = [
+    key_nodes: List[Tuple[Any, GrapheneObjectType]] = [
         (key_document.definitions[0], schema.graphql_schema.type_map[type_name])
     ]