When using QUOTE_NONNUMERIC, we now test for "numericness" with
PyNumber_Check, rather than trying to convert to a float. Reimplemented
writer - now raises exceptions when it sees a quotechar but neither
doublequote or escapechar are set. Doublequote results are now more
consistent (eg, single quote should generate """", rather than "",
which is ambiguous).
diff --git a/Misc/NEWS b/Misc/NEWS
index 4bb11e4..02f54bd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -45,6 +45,9 @@
+ quotechar=None and quoting=QUOTE_NONE now work the way PEP 305
dictates.
+ the parser now removes the escapechar prefix from escaped characters.
+ + QUOTE_NONNUMERIC now tests for numeric objects, rather than attempting
+ to cast to float.
+ + writer doublequote handling improved.
+ Dialect classes passed to the module are no longer instantiated by
the module before being parsed (the former validation scheme required
this, but the mechanism was unreliable).