fix mypy

Author: YunchuWang

azure/functions/_eventhub.py

@@ -13,7 +13,8 @@ class EventHubEvent(func_abc.EventHubEvent):
 
     def __init__(self, *,
                  body: bytes,
-                 trigger_metadata: typing.Mapping[str, meta.Datum] = None,
+                 trigger_metadata: typing.Optional[
+                     typing.Mapping[str, meta.Datum]] = None,
                  enqueued_time: typing.Optional[datetime.datetime] = None,
                  partition_key: typing.Optional[str] = None,
                  sequence_number: typing.Optional[int] = None,

azure/functions/_http.py

@@ -66,11 +66,11 @@ class HttpResponse(_abc.HttpResponse):
     """
 
     def __init__(self,
-                 body: typing.Union[str, bytes] = None, *,
-                 status_code: int = None,
+                 body: typing.Optional[typing.Union[str, bytes]] = None, *,
+                 status_code: typing.Optional[int] = None,
                  headers: typing.Optional[typing.Mapping[str, str]] = None,
                  mimetype: typing.Optional[str] = None,
-                 charset: str = None) -> None:
+                 charset: typing.Optional[str] = None) -> None:
         if status_code is None:
             status_code = 200
         self.__status_code = status_code

azure/functions/_http_wsgi.py

@@ -132,12 +132,14 @@ def from_app(cls, app, environ) -> 'WsgiResponse':
 
     def to_func_response(self) -> HttpResponse:
         lowercased_headers = {k.lower(): v for k, v in self._headers.items()}
+        mimetype = str(lowercased_headers.get('content-type', ''))
+        charset = str(lowercased_headers.get('content-encoding', ''))
         return HttpResponse(
             body=b''.join(self._buffer),
             status_code=self._status_code,
             headers=self._headers,
-            mimetype=lowercased_headers.get('content-type'),
-            charset=lowercased_headers.get('content-encoding')
+            mimetype=mimetype,
+            charset=charset
         )
 
     # PEP 3333 start response implementation

azure/functions/decorators/generic.py

@@ -8,7 +8,7 @@
 
 class GenericInputBinding(InputBinding):
 
-    @staticmethod
+    @staticmethod  # type: ignore
     def get_binding_name() -> str:
         pass
 
@@ -22,7 +22,7 @@ def __init__(self,
 
 class GenericOutputBinding(OutputBinding):
 
-    @staticmethod
+    @staticmethod  # type: ignore
     def get_binding_name() -> str:
         pass
 
@@ -36,7 +36,7 @@ def __init__(self,
 
 class GenericTrigger(Trigger):
 
-    @staticmethod
+    @staticmethod  # type: ignore
     def get_binding_name() -> str:
         pass
 

azure/functions/kafka.py

@@ -16,7 +16,8 @@ class KafkaEvent(AbstractKafkaEvent):
 
     def __init__(self, *,
                  body: bytes,
-                 trigger_metadata: typing.Mapping[str, meta.Datum] = None,
+                 trigger_metadata: typing.Optional[
+                     typing.Mapping[str, meta.Datum]] = None,
                  key: typing.Optional[str] = None,
                  offset: typing.Optional[int] = None,
                  partition: typing.Optional[int] = None,

azure/functions/servicebus.py

@@ -16,7 +16,7 @@ class ServiceBusMessage(azf_sbus.ServiceBusMessage):
     def __init__(
             self, *,
             body: bytes,
-            trigger_metadata: Mapping[str, Any] = None,
+            trigger_metadata: Optional[Mapping[str, Any]] = None,
             content_type: Optional[str] = None,
             correlation_id: Optional[str] = None,
             dead_letter_source: Optional[str] = None,