Date format support

voluptuous/error.py

@@ -169,6 +169,10 @@ class DatetimeInvalid(Invalid):
     """The value is not a formatted datetime string."""
 
 
+class DateInvalid(Invalid):
+    """The value is not a formatted date string."""
+
+
 class InInvalid(Invalid):
     pass
 

voluptuous/validators.py

@@ -15,8 +15,8 @@
     from .schema_builder import Schema, raises, message
     from .error import (MultipleInvalid, CoerceInvalid, TrueInvalid, FalseInvalid, BooleanInvalid, Invalid, AnyInvalid,
                         AllInvalid, MatchInvalid, UrlInvalid, EmailInvalid, FileInvalid, DirInvalid, RangeInvalid,
-                        PathInvalid, ExactSequenceInvalid, LengthInvalid, DatetimeInvalid, InInvalid, TypeInvalid,
-                        NotInInvalid)
+                        PathInvalid, ExactSequenceInvalid, LengthInvalid, DatetimeInvalid, DateInvalid, InInvalid,
+                        TypeInvalid, NotInInvalid)
 
 
 if sys.version_info >= (3,):
@@ -587,6 +587,24 @@ def __repr__(self):
         return 'Datetime(format=%s)' % self.format
 
 
+class Date(Datetime):
+    """Validate that the value matches the date format."""
+
+    DEFAULT_FORMAT = '%Y-%m-%d'
+
+    def __call__(self, v):
+        try:
+            datetime.date(datetime.datetime.strptime(v, self.format))
+        except (TypeError, ValueError):
+            raise DatetimeInvalid(
+                self.msg or 'value does not match'
+                            ' expected format %s' % self.format)
+        return v
+
+    def __repr__(self):
+        return 'Date(format=%s)' % self.format
+
+
 class In(object):
     """Validate that a value is in a collection."""