New submission from Mahmoud Hashemi <mak...@gmail.com>:
On Python 3.1.4, attempting to create a code object will apparently result in a
TypeError (must be str, not tuple), even when you're creating a code object
from another, working code object:
# co_what.py
def foo():
return 'bar'
co = foo.__code__
co_copy = type(co)(co.co_argcount,
co.co_kwonlyargcount,
co.co_nlocals,
co.co_stacksize,
co.co_flags,
co.co_code,
co.co_consts,
co.co_names,
co.co_varnames,
co.co_freevars,
co.co_cellvars,
co.co_filename,
co.co_name,
co.co_firstlineno,
co.co_lnotab)
# EOF
$ python3 co_what.py
Traceback (most recent call last):
File "co_what.py", line 20, in <module>
co.co_lnotab)
TypeError: must be str, not tuple
Looking at the PyCode_New function, all the arguments look correctly matched up
according to the signature in my Python 3.1.4 build source (looks identical to
the trunk source):
# Objects/codeobject.c
PyCode_New(int argcount, int kwonlyargcount,
int nlocals, int stacksize, int flags,
PyObject *code, PyObject *consts, PyObject *names,
PyObject *varnames, PyObject *freevars, PyObject *cellvars,
PyObject *filename, PyObject *name, int firstlineno,
PyObject *lnotab)
{
PyCodeObject *co;
Py_ssize_t i;
/* Check argument types */
if (argcount < 0 || nlocals < 0 ||
code == NULL ||
consts == NULL || !PyTuple_Check(consts) ||
names == NULL || !PyTuple_Check(names) ||
varnames == NULL || !PyTuple_Check(varnames) ||
freevars == NULL || !PyTuple_Check(freevars) ||
cellvars == NULL || !PyTuple_Check(cellvars) ||
name == NULL || !PyUnicode_Check(name) ||
filename == NULL || !PyUnicode_Check(filename) ||
lnotab == NULL || !PyBytes_Check(lnotab) ||
!PyObject_CheckReadBuffer(code)) {
PyErr_BadInternalCall();
return NULL;
}
And, for the record, this same behavior works just fine in the equivalent
Python 2.
----------
components: Interpreter Core
files: co_what.py
messages: 151270
nosy: mahmoud
priority: normal
severity: normal
status: open
title: PyCode_New not round-trippable (TypeError)
type: behavior
versions: Python 3.1, Python 3.2
Added file: http://bugs.python.org/file24239/co_what.py
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue13787>
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