Found them using::

  find . -name '*.py' | while read i ; do grep 'def[^(]*( ' $i /dev/null ; done
  find . -name '*.py' | while read i ; do grep ' ):' $i /dev/null ; done

(I was doing this all over my own code anyway, because I'd been using spaces in
all defs, so I thought I'd make a run on the Python code as well.  If you need
to do such fixes in your own code, you can use xx-rename or parenregu.el within
emacs.)

  for non-complex arguments.

* Replace type() comparisons with isinstance() checks.

* Replace apply() calls with equivalent syntactic form.

* Simplify __hash__ definition to hash the underlying tuple.

* Use math.hypot() for more robust computation of __abs__().

* Use sorted() instead of the multi-step keys/sort/iter.

* Update comment on the cmath module.

Cleaned up existing code by abstracting code to parse arguments.  Also removed
any unneeded operations (such as calling 'int' on a division when using floor
division also works).  Fixed a bug where the values  returned by
OldStyleRange could be short by one value.  Added more documentation.

Testing code also has a basic sanity check.

From SF patch #852334.

(Contributed by George Yoshida.)

Run these demo scripts through reindent.py to give them 4-space indents.  I've verified that their output is unchanged.

the difference got converted to float.
Put brackets around the string representation of (non-integer)
rationals.
(Sjoerd Mullender.)

Added exp(z).