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| -rw-r--r-- | Misc/NEWS | 28 |
1 files changed, 28 insertions, 0 deletions
@@ -35,6 +35,34 @@ Extension Modules Library ------- +- 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 |