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bpo-37960: Silence only necessary errors in repr() of buffered and text streams. (GH-15543) 

(cherry picked from commit b235a1b473)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Miss Islington (bot) 2019-08-29 01:13:29 -07:00 committed by GitHub
parent 43b7ed77a8
commit 102130a63c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 22 additions and 22 deletions
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8
Lib/_pyio.py
View File

@ -407,7 +407,7 @@ class IOBase(metaclass=abc.ABCMeta):
"""Destructor. Calls close()."""
try:
closed = self.closed
except Exception:
except AttributeError:
# If getting closed fails, then the object is probably
# in an unusable state, so ignore.
return
@ -865,7 +865,7 @@ class _BufferedIOMixin(BufferedIOBase):
clsname = self.__class__.__qualname__
try:
name = self.name
except Exception:
except AttributeError:
return "<{}.{}>".format(modname, clsname)
else:
return "<{}.{} name={!r}>".format(modname, clsname, name)
@ -2079,13 +2079,13 @@ class TextIOWrapper(TextIOBase):
self.__class__.__qualname__)
try:
name = self.name
except Exception:
except AttributeError:
pass
else:
result += " name={0!r}".format(name)
try:
mode = self.mode
except Exception:
except AttributeError:
pass
else:
result += " mode={0!r}".format(mode)

2
Misc/NEWS.d/next/Library/2019-08-27-10-52-13.bpo-37960.CTY7Lw.rst Normal file
View File

@ -0,0 +1,2 @@
``repr()`` of buffered and text streams now silences only expected
exceptions when get the value of "name" and "mode" attributes.

12
Modules/_io/bufferedio.c
View File

@ -1378,12 +1378,14 @@ buffered_repr(buffered *self)
{
PyObject *nameobj, *res;
nameobj = _PyObject_GetAttrId((PyObject *) self, &PyId_name);
if (nameobj == NULL) {
if (PyErr_ExceptionMatches(PyExc_Exception))
PyErr_Clear();
else
if (_PyObject_LookupAttrId((PyObject *) self, &PyId_name, &nameobj) < 0) {
if (!PyErr_ExceptionMatches(PyExc_ValueError)) {
return NULL;
}
/* Ignore ValueError raised if the underlying stream was detached */
PyErr_Clear();
}
if (nameobj == NULL) {
res = PyUnicode_FromFormat("<%s>", Py_TYPE(self)->tp_name);
}
else {

22
Modules/_io/textio.c
View File

@ -2860,14 +2860,14 @@ textiowrapper_repr(textio *self)
}
goto error;
}
nameobj = _PyObject_GetAttrId((PyObject *) self, &PyId_name);
if (nameobj == NULL) {
if (PyErr_ExceptionMatches(PyExc_Exception))
PyErr_Clear();
else
if (_PyObject_LookupAttrId((PyObject *) self, &PyId_name, &nameobj) < 0) {
if (!PyErr_ExceptionMatches(PyExc_ValueError)) {
goto error;
}
/* Ignore ValueError raised if the underlying stream was detached */
PyErr_Clear();
}
else {
if (nameobj != NULL) {
s = PyUnicode_FromFormat(" name=%R", nameobj);
Py_DECREF(nameobj);
if (s == NULL)
@ -2876,14 +2876,10 @@ textiowrapper_repr(textio *self)
if (res == NULL)
goto error;
}
modeobj = _PyObject_GetAttrId((PyObject *) self, &PyId_mode);
if (modeobj == NULL) {
if (PyErr_ExceptionMatches(PyExc_Exception))
PyErr_Clear();
else
goto error;
if (_PyObject_LookupAttrId((PyObject *) self, &PyId_mode, &modeobj) < 0) {
goto error;
}
else {
if (modeobj != NULL) {
s = PyUnicode_FromFormat(" mode=%R", modeobj);
Py_DECREF(modeobj);
if (s == NULL)