This speeds up pickling of some iterators.

This fixes also error handling in pickling methods when fail to
look up builtin "getattr".

Also, propagate the error from PyNumber_AsSsize_t() because we don't care
only about OverflowError which is not reported if the second argument is NULL.

Reported by Svace static analyzer.

METH_NOARGS functions need only a single argument but they are cast
into a PyCFunction, which takes two arguments.  This triggers an
invalid function cast warning in gcc8 due to the argument mismatch.
Fix this by adding a dummy unused argument.

Error messages when pass keyword arguments to some builtins that
don't support keyword arguments contained double parenthesis: "()()".
The regression was introduced by bpo-30534.

type now is disallowed.  Calling iter() on range instance is the only way.
Patch by Oren Milman.

type now is deprecated.  Patch by Oren Milman.

Patch by Oren Milman.

Patch by wim glenn.

Patch by Xiang Zhang.

in places where Py_DECREF was used.

The patch is automatically generated, it replaces the code that uses Py_CLEAR.

macro Py_SETREF.

PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains()
to check for and handle errors correctly.

Patch by Ned Batchelder.

index.  This avoids the possibility of setting an iterator to an invalid
state.

to the exhausted state.

error messages and comments.

This commit rewrites the docstring for int() to incorporate the documentation
changes made in issue #16036.  It also switches the docstrings for int(),
str(), range(), and slice() to use multi-line signatures.

Patch by Daniel Urban.

Issue #13201: equality for range objects is now based on equality of the underlying sequences.  Thanks Sven Marnach for the patch.

#11845: Fix typo in rangeobject.c that caused a crash in compute_slice_indices.  Patch by Daniel Urban.