Add a float type.

cereal/__init__.py

@@ -370,6 +370,26 @@ class Integer(object):
 
 Int = Integer
 
+class Float(object):
+    """ A type representing a float.
+
+    The substructures of the :class:`cereal.Structure` that wraps this
+    type are ignored.
+    """
+    def deserialize(self, struct, value):
+        try:
+            return float(value)
+        except Exception:
+            raise Invalid(struct, '%r is not a number' % value)
+
+    def serialize(self, struct, value):
+        try:
+            return str(float(value))
+        except Exception:
+            raise Invalid(struct, '%r is not a number' % value)
+
+Int = Integer
+
 class Boolean(object):
     """ A type representing a boolean object.
 

cereal/tests.py

@@ -565,6 +565,39 @@ class TestInteger(unittest.TestCase):
         result = typ.serialize(struct, val)
         self.assertEqual(result, '1')
 
+class TestFloat(unittest.TestCase):
+    def _makeOne(self):
+        from cereal import Float
+        return Float()
+
+    def test_deserialize_fails(self):
+        val = 'P'
+        struct = DummyStructure(None)
+        typ = self._makeOne()
+        e = invalid_exc(typ.deserialize, struct, val)
+        self.failUnless(e.msg)
+
+    def test_deserialize_ok(self):
+        val = '1.0'
+        struct = DummyStructure(None)
+        typ = self._makeOne()
+        result = typ.deserialize(struct, val)
+        self.assertEqual(result, 1.0)
+
+    def test_serialize_fails(self):
+        val = 'P'
+        struct = DummyStructure(None)
+        typ = self._makeOne()
+        e = invalid_exc(typ.serialize, struct, val)
+        self.failUnless(e.msg)
+
+    def test_serialize_ok(self):
+        val = 1.0
+        struct = DummyStructure(None)
+        typ = self._makeOne()
+        result = typ.serialize(struct, val)
+        self.assertEqual(result, '1.0')
+
 class TestBoolean(unittest.TestCase):
     def _makeOne(self):
         from cereal import Boolean

docs/api.rst

@@ -37,6 +37,8 @@ Types
 
   .. autoclass:: Int
 
+  .. autoclass:: Float
+
   .. autoclass:: Boolean
 
   .. autoclass:: Bool

docs/index.rst

@@ -29,7 +29,9 @@ objects, including:
 
 - An integer.
 
-- A boolean value.
+- A float.
+
+- A boolean.
 
 - An importable Python object (to a dotted Python object path).
 

setup.py

@@ -25,16 +25,17 @@ requires = []
 
 setup(name='cereal',
       version='0.0',
-      description='A schema-based serialization and deserialization library',
+      description=('A simple schema-based serialization and deserialization '
+                   'library'),
       long_description=README + '\n\n' +  CHANGES,
       classifiers=[
         "Intended Audience :: Developers",
         "Programming Language :: Python",
         ],
-      keywords='serialize deserialize validate schema',
+      keywords='serialize deserialize validate schema validation',
       author="Agendaless Consulting",
       author_email="repoze-dev@lists.repoze.org",
-      url="http://www.repoze.org",
+      url="http://docs.repoze.org/cereal",
       license="BSD-derived (http://www.repoze.org/LICENSE.txt)",
       packages=find_packages(),
       include_package_data=True,