Remove duplication

docs/validate.rst

@@ -183,6 +183,7 @@ be enabled by hooking in a format-checking object into an :class:`IValidator`.
 
 .. autoclass:: FormatChecker
     :members:
+    :exclude-members: cls_checks
 
     .. attribute:: checkers
 
@@ -191,6 +192,16 @@ be enabled by hooking in a format-checking object into an :class:`IValidator`.
         for all checkers using the :meth:`FormatChecker.checks` or
         :meth:`FormatChecker.cls_checks` decorators respectively.
 
+    .. method:: cls_checks(format)
+
+        Register a decorated function as *globally* validating a new format.
+
+        Any instance created after this function is called will pick up the
+        supplied checker.
+
+        :argument str format: the format that the decorated function will check
+
+
 
 There are a number of default checkers that :class:`FormatChecker`\s know how
 to validate. Their names can be viewed by inspecting the

jsonschema.py

@@ -517,23 +517,6 @@ class FormatChecker(object):
         else:
             self.checkers = dict((k, self.checkers[k]) for k in formats)
 
-    @classmethod
-    def cls_checks(cls, format):
-        """
-        Register a decorated function as *globally* validating a new format.
-
-        Any instance created after this function is called will pick up the
-        supplied checker.
-
-        :argument str format: the format that the decorated function will check
-
-        """
-
-        def _checks(func):
-            cls.checkers[format] = func
-            return func
-        return _checks
-
     def checks(self, format):
         """
         Register a decorated function as validating a new format.
@@ -547,6 +530,8 @@ class FormatChecker(object):
             return func
         return _checks
 
+    cls_checks = classmethod(checks)
+
     def conforms(self, instance, format):
         """
         Check whether the instance conforms to the given format.