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bpo-32255: Always quote a single empty field when write into a CSV file. (#4769)

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This allows to distinguish an empty row from a row consisting of a single empty field.
This commit is contained in:
Licht Takeuchi 2017-12-12 18:57:06 +09:00 • committed by Serhiy Storchaka
parent e0720cd9e4
commit 2001900b0c
4 changed files with 25 additions and 2 deletions
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2
Modules/_csv.c
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@ -1238,7 +1238,7 @@ csv_writerow(WriterObj *self, PyObject *seq)
if (PyErr_Occurred())
return NULL;
if (self->num_fields > 0 && self->rec_size == 0) {
if (self->num_fields > 0 && self->rec_len == 0) {
if (dialect->quoting == QUOTE_NONE) {
PyErr_Format(_csvstate_global->error_obj,
"single empty field record must be quoted");