deserialize data form media type py27

Author: p1c2u

openapi_core/compat.py

@@ -9,4 +9,22 @@
 except ImportError:
     from backports.functools_partialmethod import partialmethod
 
-__all__ = ['lru_cache', 'partialmethod']
+try:
+    from email.parser import BytesParser
+except ImportError:
+    from future.backports.email.parser import BytesParser
+
+try:
+    from email.mime.multipart import MIMEMultipart
+except ImportError:
+    from future.backports.email.mime.multipart import MIMEMultipart
+
+try:
+    from email.mime.nonmultipart import MIMENonMultipart
+except ImportError:
+    from future.backports.email.mime.nonmultipart import MIMENonMultipart
+
+__all__ = [
+    'lru_cache', 'partialmethod', 'BytesParser',
+    'MIMEMultipart', 'MIMENonMultipart',
+]

openapi_core/deserializing/media_types/util.py

@@ -1,9 +1,10 @@
-from email.parser import BytesParser
 from json import loads
 
 from six import binary_type
 from six.moves.urllib.parse import parse_qsl
 
+from openapi_core.compat import BytesParser
+
 
 def json_loads(value):
     # python 3.5 doesn't support binary input fix

requirements_2.7.txt

@@ -5,6 +5,7 @@ six
 lazy-object-proxy
 backports.functools-lru-cache
 backports.functools-partialmethod
+future==0.18.2
 enum34
 attrs
 more-itertools==5.0.0

setup.cfg

@@ -37,6 +37,7 @@ install_requires =
     more-itertools
     backports.functools-lru-cache; python_version<"3.0"
     backports.functools-partialmethod; python_version<"3.0"
+    future; python_version<"3.0"
 tests_require =
     mock; python_version<"3.0"
     pytest

tests/unit/deserializing/test_media_types_deserializers.py

@@ -1,16 +1,14 @@
-from email.mime.multipart import MIMEMultipart
-from email.mime.nonmultipart import MIMENonMultipart
-
 import pytest
 
+from openapi_core.compat import MIMEMultipart, MIMENonMultipart
 from openapi_core.deserializing.exceptions import DeserializeError
 from openapi_core.deserializing.media_types.factories import (
     MediaTypeDeserializersFactory,
 )
 from openapi_core.schema.media_types.models import MediaType
 
 
-class MIMEFormdata(MIMENonMultipart):
+class MIMEFormdata(MIMENonMultipart, object):
     def __init__(self, keyname, *args, **kwargs):
         super(MIMEFormdata, self).__init__(*args, **kwargs)
         self.add_header(