From b4255e55fd28ca5b31f86876fe3f95f38f0f0838 Mon Sep 17 00:00:00 2001
From: Syrus Akbary <me@syrusakbary.com>
Date: Thu, 29 Mar 2018 22:05:12 -0700
Subject: [PATCH 1/2] Use aniso8601 instead of iso8601

---
 graphene/types/datetime.py | 17 ++++-------------
 setup.py                   |  1 +
 2 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/graphene/types/datetime.py b/graphene/types/datetime.py
index 3b0e3f13..5cc53258 100644
--- a/graphene/types/datetime.py
+++ b/graphene/types/datetime.py
@@ -3,17 +3,10 @@ from __future__ import absolute_import
 import datetime
 
 from graphql.language import ast
+from aniso8601 import parse_datetime, parse_date, parse_time
 
 from .scalars import Scalar
 
-try:
-    import iso8601
-except ImportError:
-    raise ImportError(
-        "iso8601 package is required for DateTime Scalar.\n"
-        "You can install it using: pip install iso8601."
-    )
-
 
 class Date(Scalar):
     '''
@@ -38,7 +31,7 @@ class Date(Scalar):
 
     @staticmethod
     def parse_value(value):
-        return iso8601.parse_date(value).date()
+        return parse_date(value)
 
 
 class DateTime(Scalar):
@@ -62,7 +55,7 @@ class DateTime(Scalar):
 
     @staticmethod
     def parse_value(value):
-        return iso8601.parse_date(value)
+        return parse_datetime(value)
 
 
 class Time(Scalar):
@@ -71,7 +64,6 @@ class Time(Scalar):
     specified by
     [iso8601](https://en.wikipedia.org/wiki/ISO_8601).
     '''
-    epoch_date = '1970-01-01'
 
     @staticmethod
     def serialize(time):
@@ -87,5 +79,4 @@ class Time(Scalar):
 
     @classmethod
     def parse_value(cls, value):
-        dt = iso8601.parse_date('{}T{}'.format(cls.epoch_date, value))
-        return datetime.time(dt.hour, dt.minute, dt.second, dt.microsecond, dt.tzinfo)
+        return parse_time(value)
diff --git a/setup.py b/setup.py
index 52d7de0c..8b54d6d7 100644
--- a/setup.py
+++ b/setup.py
@@ -90,6 +90,7 @@ setup(
         'graphql-core>=2.0,<3',
         'graphql-relay>=0.4.5,<1',
         'promise>=2.1,<3',
+        'aniso8601>=3,<4',
     ],
     tests_require=tests_require,
     extras_require={

From 50cd43c6e5c228439524f76338a9b75144d03b2c Mon Sep 17 00:00:00 2001
From: Syrus Akbary <me@syrusakbary.com>
Date: Thu, 29 Mar 2018 22:31:36 -0700
Subject: [PATCH 2/2] Added Date, DateTime and Time to global exports

---
 graphene/__init__.py       | 4 ++++
 graphene/types/__init__.py | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/graphene/__init__.py b/graphene/__init__.py
index 0198043c..65253237 100644
--- a/graphene/__init__.py
+++ b/graphene/__init__.py
@@ -11,6 +11,7 @@ from .types import (
     Schema,
     Scalar,
     String, ID, Int, Float, Boolean,
+    Date, DateTime, Time,
     JSONString,
     UUID,
     List, NonNull,
@@ -54,6 +55,9 @@ __all__ = [
     'Float',
     'Enum',
     'Boolean',
+    'Date',
+    'DateTime',
+    'Time',
     'JSONString',
     'UUID',
     'List',
diff --git a/graphene/types/__init__.py b/graphene/types/__init__.py
index 2699740a..b5b9427c 100644
--- a/graphene/types/__init__.py
+++ b/graphene/types/__init__.py
@@ -5,6 +5,7 @@ from .objecttype import ObjectType
 from .interface import Interface
 from .mutation import Mutation
 from .scalars import Scalar, String, ID, Int, Float, Boolean
+from .datetime import Date, DateTime, Time
 from .json import JSONString
 from .uuid import UUID
 from .schema import Schema
@@ -36,6 +37,9 @@ __all__ = [
     'ID',
     'Int',
     'Float',
+    'Date',
+    'DateTime',
+    'Time',
     'JSONString',
     'UUID',
     'Boolean',