[Python-checkins] python/dist/src/Misc NEWS,1.1218,1.1219

andrewmcnamara at users.sourceforge.net andrewmcnamara at users.sourceforge.net
Wed Jan 12 04:25:39 CET 2005

Update of /cvsroot/python/python/dist/src/Misc
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv13389/Misc

Modified Files:
Log Message:
Add news about csv module updates.

Index: NEWS
RCS file: /cvsroot/python/python/dist/src/Misc/NEWS,v
retrieving revision 1.1218
retrieving revision 1.1219
diff -u -d -r1.1218 -r1.1219
--- NEWS	11 Jan 2005 03:03:08 -0000	1.1218
+++ NEWS	12 Jan 2005 03:25:27 -0000	1.1219
@@ -35,6 +35,34 @@
+- Enhancements to the csv module:
+  + Dialects are now validated by the underlying C code, better
+    reflecting it's capabilities, and improving it's compliance with
+    PEP 305. 
+  + Dialect parameter parsing has been re-implemented to improve error
+    reporting.
+  + quotechar=None and quoting=QUOTE_NONE now work the way PEP 305
+    dictates.
+  + the parser now removes the escapechar prefix from escaped characters.
+  + 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).
+  + The dialect registry now contains instances of the internal
+    C-coded dialect type, rather than references to python objects.
+  + the internal c-coded dialect type is now immutable.
+  + register_dialect now accepts the same keyword dialect specifications
+    as the reader and writer, allowing the user to register dialects
+    without first creating a dialect class.
+  + a configurable limit to the size of parsed fields has been added -
+    previously, an unmatched quote character could result in the entire
+    file being read into the field buffer before an error was reported.
+  + A new module method csv.set_field_limit() has been added that sets
+    the parser field size limit (returning the former limit). The initial
+    limit is 128kB.
+  + reader and writer objects were not being registered with the cyclic-GC.
+    This has been fixed.
 - _DummyThread objects in the threading module now delete self.__block that is
   inherited from _Thread since it uses up a lock allocated by 'thread'.  The
   lock primitives tend to be limited in number and thus should not be wasted on

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