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bpo-20028: Improve error message of csv.Dialect when initializing (GH-28705)

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Dong-hee Na 2021-10-09 23:50:12 +09:00 committed by GitHub
parent 5e173f5db1
commit 34bbc87b2d
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3 changed files with 70 additions and 9 deletions
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31
Lib/test/test_csv.py
View File

@ -897,7 +897,7 @@ class TestDialectValidity(unittest.TestCase):
with self.assertRaises(csv.Error) as cm:
mydialect()
self.assertEqual(str(cm.exception),
'"quotechar" must be string, not int')
'"quotechar" must be string or None, not int')
def test_delimiter(self):
class mydialect(csv.Dialect):
@ -934,6 +934,35 @@ class TestDialectValidity(unittest.TestCase):
self.assertEqual(str(cm.exception),
'"delimiter" must be string, not int')
mydialect.delimiter = None
with self.assertRaises(csv.Error) as cm:
mydialect()
self.assertEqual(str(cm.exception),
'"delimiter" must be string, not NoneType')
def test_escapechar(self):
class mydialect(csv.Dialect):
delimiter = ";"
escapechar = '\\'
doublequote = False
skipinitialspace = True
lineterminator = '\r\n'
quoting = csv.QUOTE_NONE
d = mydialect()
self.assertEqual(d.escapechar, "\\")
mydialect.escapechar = "**"
with self.assertRaisesRegex(csv.Error, '"escapechar" must be a 1-character string'):
mydialect()
mydialect.escapechar = b"*"
with self.assertRaisesRegex(csv.Error, '"escapechar" must be string or None, not bytes'):
mydialect()
mydialect.escapechar = 4
with self.assertRaisesRegex(csv.Error, '"escapechar" must be string or None, not int'):
mydialect()
def test_lineterminator(self):
class mydialect(csv.Dialect):
delimiter = ";"

2
Misc/NEWS.d/next/Library/2021-10-03-21-14-37.bpo-20028.zBA4RK.rst Normal file
View File

@ -0,0 +1,2 @@
Improve error message of :class:`csv.Dialect` when initializing.
Patch by Vajrasky Kok and Dong-hee Na.

46
Modules/_csv.c
View File

@ -229,21 +229,21 @@ _set_int(const char *name, int *target, PyObject *src, int dflt)
}
static int
_set_char(const char *name, Py_UCS4 *target, PyObject *src, Py_UCS4 dflt)
_set_char_or_none(const char *name, Py_UCS4 *target, PyObject *src, Py_UCS4 dflt)
{
if (src == NULL)
if (src == NULL) {
*target = dflt;
}
else {
*target = '\0';
if (src != Py_None) {
Py_ssize_t len;
if (!PyUnicode_Check(src)) {
PyErr_Format(PyExc_TypeError,
"\"%s\" must be string, not %.200s", name,
"\"%s\" must be string or None, not %.200s", name,
Py_TYPE(src)->tp_name);
return -1;
}
len = PyUnicode_GetLength(src);
Py_ssize_t len = PyUnicode_GetLength(src);
if (len > 1) {
PyErr_Format(PyExc_TypeError,
"\"%s\" must be a 1-character string",
@ -251,8 +251,38 @@ _set_char(const char *name, Py_UCS4 *target, PyObject *src, Py_UCS4 dflt)
return -1;
}
/* PyUnicode_READY() is called in PyUnicode_GetLength() */
if (len > 0)
else {
*target = PyUnicode_READ_CHAR(src, 0);
}
}
}
return 0;
}
static int
_set_char(const char *name, Py_UCS4 *target, PyObject *src, Py_UCS4 dflt)
{
if (src == NULL) {
*target = dflt;
}
else {
*target = '\0';
if (!PyUnicode_Check(src)) {
PyErr_Format(PyExc_TypeError,
"\"%s\" must be string, not %.200s", name,
Py_TYPE(src)->tp_name);
return -1;
}
Py_ssize_t len = PyUnicode_GetLength(src);
if (len > 1) {
PyErr_Format(PyExc_TypeError,
"\"%s\" must be a 1-character string",
name);
return -1;
}
/* PyUnicode_READY() is called in PyUnicode_GetLength() */
else {
*target = PyUnicode_READ_CHAR(src, 0);
}
}
return 0;
@ -445,9 +475,9 @@ dialect_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
goto err
DIASET(_set_char, "delimiter", &self->delimiter, delimiter, ',');
DIASET(_set_bool, "doublequote", &self->doublequote, doublequote, true);
DIASET(_set_char, "escapechar", &self->escapechar, escapechar, 0);
DIASET(_set_char_or_none, "escapechar", &self->escapechar, escapechar, 0);
DIASET(_set_str, "lineterminator", &self->lineterminator, lineterminator, "\r\n");
DIASET(_set_char, "quotechar", &self->quotechar, quotechar, '"');
DIASET(_set_char_or_none, "quotechar", &self->quotechar, quotechar, '"');
DIASET(_set_int, "quoting", &self->quoting, quoting, QUOTE_MINIMAL);
DIASET(_set_bool, "skipinitialspace", &self->skipinitialspace, skipinitialspace, false);
DIASET(_set_bool, "strict", &self->strict, strict, false);