Only allow RFC 3339 date times, not all of ISO 8601.

Closes #115

Author: Julian

docs/validate.rst

@@ -284,14 +284,22 @@ ipv4
 ipv6        OS must have :func:`socket.inet_pton` function
 email
 uri         requires rfc3987_
-date-time   requires isodate_
+date-time   requires strict-rfc3339_ [#]_
 date
 time
 regex
 color       requires webcolors_
 ==========  ====================
 
 
+.. [#] For backwards compatibility, isodate_ is also supported, but it will
+      allow any `ISO 8601 <http://en.wikipedia.org/wiki/ISO_8601>`_ date-time,
+      not just `RFC 3339 <http://www.ietf.org/rfc/rfc3339.txt>`_ as mandated by
+      the JSON Schema specification.
+
+
+.. _isodate: http://pypi.python.org/pypi/isodate/
 .. _isodate: http://pypi.python.org/pypi/isodate/
 .. _rfc3987: http://pypi.python.org/pypi/rfc3987/
+.. _strict-rfc3339: http://pypi.python.org/pypi/strict-rfc3339/
 .. _webcolors: http://pypi.python.org/pypi/webcolors/

jsonschema/_format.py

@@ -154,12 +154,17 @@ def is_uri(instance):
 
 
 try:
-    import isodate
+    import strict_rfc3339
 except ImportError:
-    pass
+    try:
+        import isodate
+    except ImportError:
+        pass
+    else:
+        _err = (ValueError, isodate.ISO8601Error)
+        _checks_drafts("date-time", raises=_err)(isodate.parse_datetime)
 else:
-    _err = (ValueError, isodate.ISO8601Error)
-    _checks_drafts("date-time", raises=_err)(isodate.parse_datetime)
+        _checks_drafts("date-time")(strict_rfc3339.validate_rfc3339)
 
 
 _checks_drafts("regex", raises=re.error)(re.compile)

tox.ini

@@ -49,10 +49,10 @@ deps =
 
 [testenv:all]
 deps =
-    isodate
     lxml
     pytest
     sphinx
+    strict-rfc3339
     webcolors
 
 [flake8]