Clean ups to datetime formatting

docs/api-guide/fields.md

@@ -2,7 +2,7 @@
 
 # Serializer fields
 
-> Each field in a Form class is responsible not only for validating data, but also for "cleaning" it -- normalizing it to a consistent format. 
+> Each field in a Form class is responsible not only for validating data, but also for "cleaning" it — normalizing it to a consistent format. 
 >
 > — [Django documentation][cite]
 
@@ -199,10 +199,10 @@ If you want to override this behavior, you'll need to declare the `DateTimeField
 
 **Signature:** `DateTimeField(format=None, input_formats=None)`
 
-* `format` - A string representing the output format.  If not specified, the `DATETIME_FORMAT` setting will be used, which defaults to `'iso8601'`.
-* `input_formats` - A list of strings representing the input formats which may be used to parse the date. If not specified, the `DATETIME_INPUT_FORMATS` setting will be used, which defaults to `['iso8601']`.
+* `format` - A string representing the output format.  If not specified, the `DATETIME_FORMAT` setting will be used, which defaults to `'iso-8601'`.
+* `input_formats` - A list of strings representing the input formats which may be used to parse the date. If not specified, the `DATETIME_INPUT_FORMATS` setting will be used, which defaults to `['iso-8601']`.
 
-DateTime format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'is8601'`, which indicates that [ISO 8601][iso8601] style datetimes should be used. (eg `'2013-01-29T12:34:56.000000'`)
+DateTime format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'iso-8601'`, which indicates that [ISO 8601][iso8601] style datetimes should be used. (eg `'2013-01-29T12:34:56.000000'`)
 
 ## DateField
 
@@ -212,10 +212,10 @@ Corresponds to `django.db.models.fields.DateField`
 
 **Signature:** `DateField(format=None, input_formats=None)`
 
-* `format` - A string representing the output format.  If not specified, the `DATE_FORMAT` setting will be used, which defaults to `'iso8601'`.
-* `input_formats` - A list of strings representing the input formats which may be used to parse the date. If not specified, the `DATE_INPUT_FORMATS` setting will be used, which defaults to `['iso8601']`. 
+* `format` - A string representing the output format.  If not specified, the `DATE_FORMAT` setting will be used, which defaults to `'iso-8601'`.
+* `input_formats` - A list of strings representing the input formats which may be used to parse the date. If not specified, the `DATE_INPUT_FORMATS` setting will be used, which defaults to `['iso-8601']`. 
 
-Date format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'is8601'`, which indicates that [ISO 8601][iso8601] style dates should be used. (eg `'2013-01-29'`)
+Date format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'iso-8601'`, which indicates that [ISO 8601][iso8601] style dates should be used. (eg `'2013-01-29'`)
 
 ## TimeField
 
@@ -227,10 +227,10 @@ Corresponds to `django.db.models.fields.TimeField`
 
 **Signature:** `TimeField(format=None, input_formats=None)`
 
-* `format` - A string representing the output format.  If not specified, the `TIME_FORMAT` setting will be used, which defaults to `'iso8601'`.
-* `input_formats` - A list of strings representing the input formats which may be used to parse the date. If not specified, the `TIME_INPUT_FORMATS` setting will be used, which defaults to `['iso8601']`.
+* `format` - A string representing the output format.  If not specified, the `TIME_FORMAT` setting will be used, which defaults to `'iso-8601'`.
+* `input_formats` - A list of strings representing the input formats which may be used to parse the date. If not specified, the `TIME_INPUT_FORMATS` setting will be used, which defaults to `['iso-8601']`.
 
-Time format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'is8601'`, which indicates that [ISO 8601][iso8601] style times should be used. (eg `'12:34:56.000000'`)
+Time format strings may either be [python strftime formats][strftime] which explicitly specifiy the format, or the special string `'iso-8601'`, which indicates that [ISO 8601][iso8601] style times should be used. (eg `'12:34:56.000000'`)
 
 ## IntegerField
 

docs/api-guide/settings.md

@@ -34,7 +34,11 @@ The `api_settings` object will check for any user-defined settings, and otherwis
 
 # API Reference
 
-## DEFAULT_RENDERER_CLASSES
+## API policy settings
+
+*The following settings control the basic API policies, and are applied to every `APIView` class based view, or `@api_view` function based view.*
+
+#### DEFAULT_RENDERER_CLASSES
 
 A list or tuple of renderer classes, that determines the default set of renderers that may be used when returning a `Response` object.
 
@@ -45,7 +49,7 @@ Default:
         'rest_framework.renderers.BrowsableAPIRenderer',
     )
 
-## DEFAULT_PARSER_CLASSES
+#### DEFAULT_PARSER_CLASSES
 
 A list or tuple of parser classes, that determines the default set of parsers used when accessing the `request.DATA` property.
 
@@ -57,7 +61,7 @@ Default:
         'rest_framework.parsers.MultiPartParser'
     )
 
-## DEFAULT_AUTHENTICATION_CLASSES
+#### DEFAULT_AUTHENTICATION_CLASSES
 
 A list or tuple of authentication classes, that determines the default set of authenticators used when accessing the `request.user` or `request.auth` properties.
 
@@ -68,7 +72,7 @@ Default:
         'rest_framework.authentication.BasicAuthentication'
     )
 
-## DEFAULT_PERMISSION_CLASSES
+#### DEFAULT_PERMISSION_CLASSES
 
 A list or tuple of permission classes, that determines the default set of permissions checked at the start of a view.
 
@@ -78,59 +82,77 @@ Default:
         'rest_framework.permissions.AllowAny',
     )
 
-## DEFAULT_THROTTLE_CLASSES
+#### DEFAULT_THROTTLE_CLASSES
 
 A list or tuple of throttle classes, that determines the default set of throttles checked at the start of a view.
 
 Default: `()`
 
-## DEFAULT_CONTENT_NEGOTIATION_CLASS
+#### DEFAULT_CONTENT_NEGOTIATION_CLASS
 
 A content negotiation class, that determines how a renderer is selected for the response, given an incoming request.
 
 Default: `'rest_framework.negotiation.DefaultContentNegotiation'`
 
-## DEFAULT_MODEL_SERIALIZER_CLASS
+---
+
+## Generic view settings
+
+*The following settings control the behavior of the generic class based views.*
+
+#### DEFAULT_MODEL_SERIALIZER_CLASS
 
 A class that determines the default type of model serializer that should be used by a generic view if `model` is specified, but `serializer_class` is not provided.
 
 Default: `'rest_framework.serializers.ModelSerializer'`
 
-## DEFAULT_PAGINATION_SERIALIZER_CLASS
+#### DEFAULT_PAGINATION_SERIALIZER_CLASS
 
 A class the determines the default serialization style for paginated responses.
 
 Default: `rest_framework.pagination.PaginationSerializer`
 
-## FILTER_BACKEND
+#### FILTER_BACKEND
 
 The filter backend class that should be used for generic filtering.  If set to `None` then generic filtering is disabled.
 
-## PAGINATE_BY
+#### PAGINATE_BY
 
 The default page size to use for pagination.  If set to `None`, pagination is disabled by default.
 
 Default: `None`
 
-## PAGINATE_BY_PARAM
+#### PAGINATE_BY_PARAM
 
 The name of a query parameter, which can be used by the client to overide the default page size to use for pagination.  If set to `None`, clients may not override the default page size.
 
 Default: `None`
 
-## UNAUTHENTICATED_USER
+---
+
+## Authentication settings
+
+*The following settings control the behavior of unauthenticated requests.*
+
+#### UNAUTHENTICATED_USER
 
 The class that should be used to initialize `request.user` for unauthenticated requests.
 
 Default: `django.contrib.auth.models.AnonymousUser`
 
-## UNAUTHENTICATED_TOKEN
+#### UNAUTHENTICATED_TOKEN
 
 The class that should be used to initialize `request.auth` for unauthenticated requests.
 
 Default: `None`
 
-## FORM_METHOD_OVERRIDE
+---
+
+## Browser overrides
+
+*The following settings provide URL or form-based overrides of the default browser behavior.*
+
+#### FORM_METHOD_OVERRIDE
 
 The name of a form field that may be used to override the HTTP method of the form.
 
@@ -138,7 +160,7 @@ If the value of this setting is `None` then form method overloading will be disa
 
 Default: `'_method'`
 
-## FORM_CONTENT_OVERRIDE
+#### FORM_CONTENT_OVERRIDE
 
 The name of a form field that may be used to override the content of the form payload.  Must be used together with `FORM_CONTENTTYPE_OVERRIDE`.
 
@@ -146,7 +168,7 @@ If either setting is `None` then form content overloading will be disabled.
 
 Default: `'_content'`
 
-## FORM_CONTENTTYPE_OVERRIDE
+#### FORM_CONTENTTYPE_OVERRIDE
 
 The name of a form field that may be used to override the content type of the form payload.  Must be used together with `FORM_CONTENT_OVERRIDE`.
 
@@ -154,7 +176,7 @@ If either setting is `None` then form content overloading will be disabled.
 
 Default: `'_content_type'`
 
-## URL_ACCEPT_OVERRIDE
+#### URL_ACCEPT_OVERRIDE
 
 The name of a URL parameter that may be used to override the HTTP `Accept` header.
 
@@ -162,52 +184,62 @@ If the value of this setting is `None` then URL accept overloading will be disab
 
 Default: `'accept'`
 
-## URL_FORMAT_OVERRIDE
+#### URL_FORMAT_OVERRIDE
 
 The name of a URL parameter that may be used to override the default `Accept` header based content negotiation.
 
 Default: `'format'`
 
-## FORMAT_SUFFIX_KWARG
+---
 
-The name of a parameter in the URL conf that may be used to provide a format suffix.
+## Date/Time formatting
 
-Default: `'format'`
+*The following settings are used to control how date and time representations may be parsed and rendered.*
 
-## DATETIME_FORMAT
+#### DATETIME_FORMAT
 
-A format string that should be used by default for `DateTimeField` serializer fields.
+A format string that should be used by default for rendering the output of `DateTimeField` serializer fields.
 
-Default: `'iso8601'`
+Default: `'iso-8601'`
 
-## DATETIME_INPUT_FORMATS
+#### DATETIME_INPUT_FORMATS
 
 A list of format strings that should be used by default for parsing inputs to `DateTimeField` serializer fields.
 
-Default: `['iso8601']`
+Default: `['iso-8601']`
 
-## DATE_FORMAT
+#### DATE_FORMAT
 
-A format string that should be used by default for `DateField` serializer fields.
+A format string that should be used by default for rendering the output of `DateField` serializer fields.
 
-Default: `'iso8601'`
+Default: `'iso-8601'`
 
-## DATE_INPUT_FORMATS
+#### DATE_INPUT_FORMATS
 
 A list of format strings that should be used by default for parsing inputs to `DateField` serializer fields.
 
-Default: `['iso8601']`
+Default: `['iso-8601']`
 
-## TIME_FORMAT
+#### TIME_FORMAT
 
-A format string that should be used by default for `TimeField` serializer fields.
+A format string that should be used by default for rendering the output of `TimeField` serializer fields.
 
-Default: `'iso8601'`
+Default: `'iso-8601'`
 
-## TIME_INPUT_FORMATS
+#### TIME_INPUT_FORMATS
 
 A list of format strings that should be used by default for parsing inputs to `TimeField` serializer fields.
 
-Default: `['iso8601']`
+Default: `['iso-8601']`
+
+---
+
+## Miscellaneous settings
+
+#### FORMAT_SUFFIX_KWARG
+
+The name of a parameter in the URL conf that may be used to provide a format suffix.
+
+Default: `'format'`
 
 [cite]: http://www.python.org/dev/peps/pep-0020/

docs/topics/release-notes.md

@@ -42,7 +42,7 @@ You can determine your currently installed version using `pip freeze`:
 
 ### Master
 
-* Support for custom input and output formats for `DateField`, `DateTimeField` and `TimeField`
+* Support for custom input and output formats for `DateField`, `DateTimeField` and `TimeField`.
 * Cleanup: Request authentication is no longer lazily evaluated, instead authentication is always run, which results in more consistent, obvious behavior.  Eg. Supplying bad auth credentials will now always return an error response, even if no permissions are set on the view.
 * Bugfix for serializer data being uncacheable with pickle protocol 0.
 * Bugfixes for model field validation edge-cases.

rest_framework/__init__.py

@@ -6,4 +6,4 @@ VERSION = __version__  # synonym
 HTTP_HEADER_ENCODING = 'iso-8859-1'
 
 # Default input and output format
-ISO8601 = 'iso-8601'
\ No newline at end of file
+ISO_8601 = 'iso-8601'

rest_framework/fields.py

@@ -14,13 +14,12 @@ from django.forms import widgets
 from django.utils.encoding import is_protected_type
 from django.utils.translation import ugettext_lazy as _
 
-from rest_framework import ISO8601
+from rest_framework import ISO_8601
 from rest_framework.compat import timezone, parse_date, parse_datetime, parse_time
 from rest_framework.compat import BytesIO
 from rest_framework.compat import six
 from rest_framework.compat import smart_text
 from rest_framework.settings import api_settings
-from rest_framework.utils.dates import get_readable_date_format
 
 
 def is_simple_callable(obj):
@@ -52,6 +51,46 @@ def get_component(obj, attr_name):
     return val
 
 
+def readable_datetime_formats(formats):
+    format = ', '.join(formats).replace(ISO_8601, 'YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HHMM|-HHMM|Z]')
+    return humanize_strptime(format)
+
+
+def readable_date_formats(formats):
+    format = ', '.join(formats).replace(ISO_8601, 'YYYY[-MM[-DD]]')
+    return humanize_strptime(format)
+
+
+def readable_time_formats(formats):
+    format = ', '.join(formats).replace(ISO_8601, 'hh:mm[:ss[.uuuuuu]]')
+    return humanize_strptime(format)
+
+
+def humanize_strptime(format_string):
+    # Note that we're missing some of the locale specific mappings that
+    # don't really make sense.
+    mapping = {
+        "%Y": "YYYY",
+        "%y": "YY",
+        "%m": "MM",
+        "%b": "[Jan-Dec]",
+        "%B": "[January-December]",
+        "%d": "DD",
+        "%H": "hh",
+        "%I": "hh",  # Requires '%p' to differentiate from '%H'.
+        "%M": "mm",
+        "%S": "ss",
+        "%f": "uuuuuu",
+        "%a": "[Mon-Sun]",
+        "%A": "[Monday-Sunday]",
+        "%p": "[AM|PM]",
+        "%z": "[+HHMM|-HHMM]"
+    }
+    for key, val in mapping.items():
+        format_string = format_string.replace(key, val)
+    return format_string
+
+
 class Field(object):
     read_only = True
     creation_counter = 0
@@ -453,11 +492,11 @@ class DateField(WritableField):
     }
     empty = None
     input_formats = api_settings.DATE_INPUT_FORMATS
-    output_format = api_settings.DATE_OUTPUT_FORMAT
+    format = api_settings.DATE_FORMAT
 
-    def __init__(self, input_formats=None, output_format=None, *args, **kwargs):
+    def __init__(self, input_formats=None, format=None, *args, **kwargs):
         self.input_formats = input_formats if input_formats is not None else self.input_formats
-        self.output_format = output_format if output_format is not None else self.output_format
+        self.format = format if format is not None else self.format
         super(DateField, self).__init__(*args, **kwargs)
 
     def from_native(self, value):
@@ -475,7 +514,7 @@ class DateField(WritableField):
             return value
 
         for format in self.input_formats:
-            if format.lower() == ISO8601:
+            if format.lower() == ISO_8601:
                 try:
                     parsed = parse_date(value)
                 except (ValueError, TypeError):
@@ -491,16 +530,15 @@ class DateField(WritableField):
                 else:
                     return parsed.date()
 
-        date_input_formats = '; '.join(self.input_formats).replace(ISO8601, 'YYYY-MM-DD')
-        msg = self.error_messages['invalid'] % get_readable_date_format(date_input_formats)
+        msg = self.error_messages['invalid'] % readable_date_formats(self.input_formats)
         raise ValidationError(msg)
 
     def to_native(self, value):
         if isinstance(value, datetime.datetime):
             value = value.date()
-        if self.output_format.lower() == ISO8601:
+        if self.format.lower() == ISO_8601:
             return value.isoformat()
-        return value.strftime(self.output_format)
+        return value.strftime(self.format)
 
 
 class DateTimeField(WritableField):
@@ -513,11 +551,11 @@ class DateTimeField(WritableField):
     }
     empty = None
     input_formats = api_settings.DATETIME_INPUT_FORMATS
-    output_format = api_settings.DATETIME_OUTPUT_FORMAT
+    format = api_settings.DATETIME_FORMAT
 
-    def __init__(self, input_formats=None, output_format=None, *args, **kwargs):
+    def __init__(self, input_formats=None, format=None, *args, **kwargs):
         self.input_formats = input_formats if input_formats is not None else self.input_formats
-        self.output_format = output_format if output_format is not None else self.output_format
+        self.format = format if format is not None else self.format
         super(DateTimeField, self).__init__(*args, **kwargs)
 
     def from_native(self, value):
@@ -541,7 +579,7 @@ class DateTimeField(WritableField):
             return value
 
         for format in self.input_formats:
-            if format.lower() == ISO8601:
+            if format.lower() == ISO_8601:
                 try:
                     parsed = parse_datetime(value)
                 except (ValueError, TypeError):
@@ -557,14 +595,13 @@ class DateTimeField(WritableField):
                 else:
                     return parsed
 
-        datetime_input_formats = '; '.join(self.input_formats).replace(ISO8601, 'YYYY-MM-DD HH:MM[:ss[.uuuuuu]][TZ]')
-        msg = self.error_messages['invalid'] % get_readable_date_format(datetime_input_formats)
+        msg = self.error_messages['invalid'] % readable_datetime_formats(self.input_formats)
         raise ValidationError(msg)
 
     def to_native(self, value):
-        if self.output_format.lower() == ISO8601:
+        if self.format.lower() == ISO_8601:
             return value.isoformat()
-        return value.strftime(self.output_format)
+        return value.strftime(self.format)
 
 
 class TimeField(WritableField):
@@ -577,11 +614,11 @@ class TimeField(WritableField):
     }
     empty = None
     input_formats = api_settings.TIME_INPUT_FORMATS
-    output_format = api_settings.TIME_OUTPUT_FORMAT
+    format = api_settings.TIME_FORMAT
 
-    def __init__(self, input_formats=None, output_format=None, *args, **kwargs):
+    def __init__(self, input_formats=None, format=None, *args, **kwargs):
         self.input_formats = input_formats if input_formats is not None else self.input_formats
-        self.output_format = output_format if output_format is not None else self.output_format
+        self.format = format if format is not None else self.format
         super(TimeField, self).__init__(*args, **kwargs)
 
     def from_native(self, value):
@@ -592,7 +629,7 @@ class TimeField(WritableField):
             return value
 
         for format in self.input_formats:
-            if format.lower() == ISO8601:
+            if format.lower() == ISO_8601:
                 try:
                     parsed = parse_time(value)
                 except (ValueError, TypeError):
@@ -608,16 +645,15 @@ class TimeField(WritableField):
                 else:
                     return parsed.time()
 
-        time_input_formats = '; '.join(self.input_formats).replace(ISO8601, 'HH:MM[:ss[.uuuuuu]]')
-        msg = self.error_messages['invalid'] % get_readable_date_format(time_input_formats)
+        msg = self.error_messages['invalid'] % readable_time_formats(self.input_formats)
         raise ValidationError(msg)
 
     def to_native(self, value):
         if isinstance(value, datetime.datetime):
             value = value.time()
-        if self.output_format.lower() == ISO8601:
+        if self.format.lower() == ISO_8601:
             return value.isoformat()
-        return value.strftime(self.output_format)
+        return value.strftime(self.format)
 
 
 class IntegerField(WritableField):

rest_framework/settings.py

@@ -22,7 +22,7 @@ from __future__ import unicode_literals
 from django.conf import settings
 from django.utils import importlib
 
-from rest_framework import ISO8601
+from rest_framework import ISO_8601
 from rest_framework.compat import six
 
 
@@ -82,19 +82,19 @@ DEFAULTS = {
 
     # Input and output formats
     'DATE_INPUT_FORMATS': (
-        ISO8601,
+        ISO_8601,
     ),
-    'DATE_OUTPUT_FORMAT': ISO8601,
+    'DATE_FORMAT': ISO_8601,
 
     'DATETIME_INPUT_FORMATS': (
-        ISO8601,
+        ISO_8601,
     ),
-    'DATETIME_OUTPUT_FORMAT': ISO8601,
+    'DATETIME_FORMAT': ISO_8601,
 
     'TIME_INPUT_FORMATS': (
-        ISO8601,
+        ISO_8601,
     ),
-    'TIME_OUTPUT_FORMAT': ISO8601,
+    'TIME_FORMAT': ISO_8601,
 }
 
 

rest_framework/tests/fields.py

@@ -59,7 +59,7 @@ class BasicFieldTests(TestCase):
         PK fields other than AutoField fields should not be read_only by default.
         """
         serializer = CharPrimaryKeyModelSerializer()
-        self.assertEquals(serializer.fields['id'].read_only, False)
+        self.assertEqual(serializer.fields['id'].read_only, False)
 
 
 class DateFieldTest(TestCase):
@@ -134,7 +134,7 @@ class DateFieldTest(TestCase):
         try:
             f.from_native('1984-13-31')
         except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Date has wrong format. Use one of these formats instead: YYYY-MM-DD"])
+            self.assertEqual(e.messages, ["Date has wrong format. Use one of these formats instead: YYYY[-MM[-DD]]"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -147,7 +147,7 @@ class DateFieldTest(TestCase):
         try:
             f.from_native('1984 -- 31')
         except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Date has wrong format. Use one of these formats instead: YYYY-MM-DD"])
+            self.assertEqual(e.messages, ["Date has wrong format. Use one of these formats instead: YYYY[-MM[-DD]]"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -165,7 +165,7 @@ class DateFieldTest(TestCase):
         """
         Make sure to_native() returns correct custom format.
         """
-        f = serializers.DateField(output_format="%Y - %m.%d")
+        f = serializers.DateField(format="%Y - %m.%d")
 
         result_1 = f.to_native(datetime.date(1984, 7, 31))
 
@@ -221,7 +221,7 @@ class DateTimeFieldTest(TestCase):
         try:
             f.from_native('1984-07-31 04:31:59')
         except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Datetime has wrong format. Use one of these formats instead: YYYY -- HH:MM"])
+            self.assertEqual(e.messages, ["Datetime has wrong format. Use one of these formats instead: YYYY -- hh:mm"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -253,7 +253,7 @@ class DateTimeFieldTest(TestCase):
             f.from_native('04:61:59')
         except validators.ValidationError as e:
             self.assertEqual(e.messages, ["Datetime has wrong format. Use one of these formats instead: "
-                                          "YYYY-MM-DD HH:MM[:ss[.uuuuuu]][TZ]"])
+                                          "YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HHMM|-HHMM|Z]"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -267,7 +267,7 @@ class DateTimeFieldTest(TestCase):
             f.from_native('04 -- 31')
         except validators.ValidationError as e:
             self.assertEqual(e.messages, ["Datetime has wrong format. Use one of these formats instead: "
-                                          "YYYY-MM-DD HH:MM[:ss[.uuuuuu]][TZ]"])
+                                          "YYYY-MM-DDThh:mm[:ss[.uuuuuu]][+HHMM|-HHMM|Z]"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -291,7 +291,7 @@ class DateTimeFieldTest(TestCase):
         """
         Make sure to_native() returns correct custom format.
         """
-        f = serializers.DateTimeField(output_format="%Y - %H:%M")
+        f = serializers.DateTimeField(format="%Y - %H:%M")
 
         result_1 = f.to_native(datetime.datetime(1984, 7, 31))
         result_2 = f.to_native(datetime.datetime(1984, 7, 31, 4, 31))
@@ -353,7 +353,7 @@ class TimeFieldTest(TestCase):
         try:
             f.from_native('04:31:59')
         except validators.ValidationError as e:
-            self.assertEqual(e.messages, ["Time has wrong format. Use one of these formats instead: HH -- MM"])
+            self.assertEqual(e.messages, ["Time has wrong format. Use one of these formats instead: hh -- mm"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -385,7 +385,7 @@ class TimeFieldTest(TestCase):
             f.from_native('04:61:59')
         except validators.ValidationError as e:
             self.assertEqual(e.messages, ["Time has wrong format. Use one of these formats instead: "
-                                          "HH:MM[:ss[.uuuuuu]]"])
+                                          "hh:mm[:ss[.uuuuuu]]"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -399,7 +399,7 @@ class TimeFieldTest(TestCase):
             f.from_native('04 -- 31')
         except validators.ValidationError as e:
             self.assertEqual(e.messages, ["Time has wrong format. Use one of these formats instead: "
-                                          "HH:MM[:ss[.uuuuuu]]"])
+                                          "hh:mm[:ss[.uuuuuu]]"])
         else:
             self.fail("ValidationError was not properly raised")
 
@@ -420,11 +420,11 @@ class TimeFieldTest(TestCase):
         """
         Make sure to_native() returns correct custom format.
         """
-        f = serializers.TimeField(output_format="%H - %S [%f]")
+        f = serializers.TimeField(format="%H - %S [%f]")
         result_1 = f.to_native(datetime.time(4, 31))
         result_2 = f.to_native(datetime.time(4, 31, 59))
         result_3 = f.to_native(datetime.time(4, 31, 59, 200))
 
         self.assertEqual('04 - 00 [000000]', result_1)
         self.assertEqual('04 - 59 [000000]', result_2)
-        self.assertEqual('04 - 59 [000200]', result_3)
\ No newline at end of file
+        self.assertEqual('04 - 59 [000200]', result_3)

rest_framework/utils/dates.py

-def get_readable_date_format(date_format):
-    mapping = [("%Y", "YYYY"),
-               ("%y", "YY"),
-               ("%m", "MM"),
-               ("%b", "[Jan through Dec]"),
-               ("%B", "[January through December]"),
-               ("%d", "DD"),
-               ("%H", "HH"),
-               ("%M", "MM"),
-               ("%S", "SS"),
-               ("%f", "uuuuuu")]
-    for k, v in mapping:
-        date_format = date_format.replace(k, v)
-    return date_format
\ No newline at end of file

tox.ini

 [tox]
 downloadcache = {toxworkdir}/cache/
-envlist = py3.3-django1.5,py3.2-django1.5,py2.7-django1.5,py2.7-django1.4,py2.7-django1.3,py2.6-django1.5,py2.6-django1.4,py2.6-django1.3
+envlist = py3.3-django1.5,py3.2-django1.5,py2.7-django1.5,py2.6-django1.5,py2.7-django1.4,py2.6-django1.4,py2.7-django1.3,py2.6-django1.3
 
 [testenv]
 commands = {envpython} rest_framework/runtests/runtests.py