* Show list of fields option before showing the single string alternative.
* Remove the PS2 prompts so that the examples become cut-and-pastable.

that could lead to infinite recursion (closes #10042).

Patch by Tom N. (Backported from py3k codeline).

Issue3851

ensure that it will be found regardless of the shell PATH. This ensures
that multiprocessing.cpu_count works on default installs of MacOSX.

Patch by Steffen Daode Nurpmeso.

IP addresses in the proxy exception list.