Mariatta Wijaya added the comment:
Thanks Hugh,
Are you thinking of something like the following?
class DictWriter:
def __init__(self, f, fieldnames, restval="", extrasaction="raise",
dialect="excel", *args, **kwds):
self._fieldnames = fieldnames # list of keys for the dict
self._fieldnames_set = set(self._fieldnames)
@property
def fieldnames(self):
return self._fieldnames
@fieldnames.setter
def fieldnames(self, value):
self._fieldnames = value
self._fieldnames_set = set(self._fieldnames)
def _dict_to_list(self, rowdict):
if self.extrasaction == "raise":
wrong_fields = rowdict.keys() - self._fieldnames_set
...
If so, I can work on another patch.
Thanks.
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