lint fix and deepcopy for headers/data

Signed-off-by: Curtis Mason <cumason@google.com>

Author: Curtis Mason

cloudevents/sdk/event/base.py

@@ -31,6 +31,7 @@
     'ce-time'
 }
 
+
 # TODO(slinkydeveloper) is this really needed?
 class EventGetterSetter(object):
 
@@ -143,9 +144,11 @@ def UnmarshalBinary(
         body: typing.IO,
         data_unmarshaller: typing.Callable
     ):
-        # Extract only CloudEvent fields from headers 
-        ce_fields = [field for field in headers if \
-            (field in _ce_required_fields) or (field in _ce_optional_fields)]
+        # Extract only CloudEvent fields from headers
+        ce_fields = [
+            field for field in headers if
+            (field in _ce_required_fields) or (field in _ce_optional_fields)
+        ]
 
         headers = {key: headers[key] for key in ce_fields}
         for header, value in headers.items():

cloudevents/sdk/http_events.py

@@ -44,14 +44,11 @@
 import json
 import typing
 
-from cloudevents.sdk import converters
 from cloudevents.sdk import marshaller
 
 from cloudevents.sdk.event import base
 from cloudevents.sdk.event import v1
 
-import requests
-
 
 class Event(base.BaseEvent):
     """
@@ -114,8 +111,8 @@ def __init__(
         else:
             raise NotImplementedError
 
-        self.headers = headers
-        self.data = data
+        self.headers = copy.deepcopy(headers)
+        self.data = copy.deepcopy(data)
         self.marshall = marshaller.NewDefaultHTTPMarshaller()
         self.event_handler = v1.Event()
         self.marshall.FromRequest(