Python/C API documentation for PySequence_Tuple is 
duplicated.
  http://docs.python.org/api/sequence.html

$ grep -n PySequence_Tup Doc/api/abstract.tex
781:\begin{cfuncdesc}{PyObject*}{PySequence_Tuple}
{PyObject *o}
812:\begin{cfuncdesc}{PyObject*}{PySequence_Tuple}
{PyObject *o}

One says::
  Returns the o as a tuple on success, and NULL on 
failure. This is equivalent to the Python expression "tuple
(o)". 

The other says:
  Return a tuple object with the same contents as the 
arbitrary sequence o. If o is a tuple, a new reference will 
be returned, otherwise a tuple will be constructed with 
the appropriate contents. 

They need to be merged.

Logged In: YES 
user_id=33168

George, thanks for this bug and the many other issues you've
found.

Checked in as:
 * Doc/api/abstract.tex 1.36 and 1.35.2.1