On 3/7/2017 5:05 PM, John Nagle wrote:
   How do I test if a Python 2.7.8 build was built for 32-bit
Unicode?  (I'm dealing with shared hosting, and I'm stuck
with their provided versions.)

If I give this to Python 2.7.x:

    sy = u'\U0001f60f'

len(sy) is 1 on a Ubuntu 14.04LTS machine, but 2 on the
Red Hat shared hosting machine.  I assume "1" indicates
32-bit Unicode capability, and "2" indicates 16-bit.

Correct

It looks like  Python 2.x in 16-bit mode is using a UTF-16
pair encoding, like Java. Is that right?  Is it documented
somewhere?

Yes, surrogate pairs. Probably

(Annoyingly, while the shared host has a Python 3, it's
3.2.3, which rejects "u" Unicode string constants and
has other problems in the MySQL area.)

;Very annoying. 3.2 on *nix can also have either narrow or wide build.
3.3+ use new flexible string representation on all platforms.


--
Terry Jan Reedy

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