#6780: merge with 3.1.
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index d074758..5eab8f5 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -303,6 +303,11 @@
self.assertTrue(b.startswith(b"h"))
self.assertFalse(b.startswith(b"hellow"))
self.assertFalse(b.startswith(b"ha"))
+ with self.assertRaises(TypeError) as cm:
+ b.startswith([b'h'])
+ exc = str(cm.exception)
+ self.assertIn('bytes', exc)
+ self.assertIn('tuple', exc)
def test_endswith(self):
b = self.type2test(b'hello')
@@ -312,6 +317,11 @@
self.assertTrue(b.endswith(b"o"))
self.assertFalse(b.endswith(b"whello"))
self.assertFalse(b.endswith(b"no"))
+ with self.assertRaises(TypeError) as cm:
+ b.endswith([b'o'])
+ exc = str(cm.exception)
+ self.assertIn('bytes', exc)
+ self.assertIn('tuple', exc)
def test_find(self):
b = self.type2test(b'mississippi')
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 65b26c5..97be587 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -819,6 +819,14 @@
self.assertEqual('%f' % INF, 'inf')
self.assertEqual('%F' % INF, 'INF')
+ def test_startswith_endswith_errors(self):
+ for meth in ('foo'.startswith, 'foo'.endswith):
+ with self.assertRaises(TypeError) as cm:
+ meth(['f'])
+ exc = str(cm.exception)
+ self.assertIn('str', exc)
+ self.assertIn('tuple', exc)
+
@support.run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
def test_format_float(self):
# should not format with a comma, but always with C locale
diff --git a/Misc/NEWS b/Misc/NEWS
index f4a4c52..7331aea 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,9 @@
Core and Builtins
-----------------
+- Issue #6780: fix starts/endswith error message to mention that tuples are
+ accepted too.
+
- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files
between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP
chars (e.g. "\U00012345"[0]).
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 827fded..7a74104 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -1280,7 +1280,7 @@
Return True if B starts with the specified prefix, False otherwise.\n\
With optional start, test B beginning at that position.\n\
With optional end, stop comparing B at that position.\n\
-prefix can also be a tuple of strings to try.");
+prefix can also be a tuple of bytes to try.");
static PyObject *
bytearray_startswith(PyByteArrayObject *self, PyObject *args)
@@ -1307,8 +1307,12 @@
Py_RETURN_FALSE;
}
result = _bytearray_tailmatch(self, subobj, start, end, -1);
- if (result == -1)
+ if (result == -1) {
+ if (PyErr_ExceptionMatches(PyExc_TypeError))
+ PyErr_Format(PyExc_TypeError, "startswith first arg must be bytes "
+ "or a tuple of bytes, not %s", Py_TYPE(subobj)->tp_name);
return NULL;
+ }
else
return PyBool_FromLong(result);
}
@@ -1319,7 +1323,7 @@
Return True if B ends with the specified suffix, False otherwise.\n\
With optional start, test B beginning at that position.\n\
With optional end, stop comparing B at that position.\n\
-suffix can also be a tuple of strings to try.");
+suffix can also be a tuple of bytes to try.");
static PyObject *
bytearray_endswith(PyByteArrayObject *self, PyObject *args)
@@ -1346,8 +1350,12 @@
Py_RETURN_FALSE;
}
result = _bytearray_tailmatch(self, subobj, start, end, +1);
- if (result == -1)
+ if (result == -1) {
+ if (PyErr_ExceptionMatches(PyExc_TypeError))
+ PyErr_Format(PyExc_TypeError, "endswith first arg must be bytes or "
+ "a tuple of bytes, not %s", Py_TYPE(subobj)->tp_name);
return NULL;
+ }
else
return PyBool_FromLong(result);
}
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index 9751201..38458ef 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -2228,8 +2228,12 @@
Py_RETURN_FALSE;
}
result = _bytes_tailmatch(self, subobj, start, end, -1);
- if (result == -1)
+ if (result == -1) {
+ if (PyErr_ExceptionMatches(PyExc_TypeError))
+ PyErr_Format(PyExc_TypeError, "startswith first arg must be bytes "
+ "or a tuple of bytes, not %s", Py_TYPE(subobj)->tp_name);
return NULL;
+ }
else
return PyBool_FromLong(result);
}
@@ -2268,8 +2272,12 @@
Py_RETURN_FALSE;
}
result = _bytes_tailmatch(self, subobj, start, end, +1);
- if (result == -1)
+ if (result == -1) {
+ if (PyErr_ExceptionMatches(PyExc_TypeError))
+ PyErr_Format(PyExc_TypeError, "endswith first arg must be bytes or "
+ "a tuple of bytes, not %s", Py_TYPE(subobj)->tp_name);
return NULL;
+ }
else
return PyBool_FromLong(result);
}
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index ddf6f2e..1f1fe8e 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -9029,8 +9029,12 @@
Py_RETURN_FALSE;
}
substring = (PyUnicodeObject *)PyUnicode_FromObject(subobj);
- if (substring == NULL)
+ if (substring == NULL) {
+ if (PyErr_ExceptionMatches(PyExc_TypeError))
+ PyErr_Format(PyExc_TypeError, "startswith first arg must be str or "
+ "a tuple of str, not %s", Py_TYPE(subobj)->tp_name);
return NULL;
+ }
result = tailmatch(self, substring, start, end, -1);
Py_DECREF(substring);
return PyBool_FromLong(result);
@@ -9073,9 +9077,12 @@
Py_RETURN_FALSE;
}
substring = (PyUnicodeObject *)PyUnicode_FromObject(subobj);
- if (substring == NULL)
+ if (substring == NULL) {
+ if (PyErr_ExceptionMatches(PyExc_TypeError))
+ PyErr_Format(PyExc_TypeError, "endswith first arg must be str or "
+ "a tuple of str, not %s", Py_TYPE(subobj)->tp_name);
return NULL;
-
+ }
result = tailmatch(self, substring, start, end, +1);
Py_DECREF(substring);
return PyBool_FromLong(result);