[summerofcode] logging in standard library

[Liu Jin]

Hi,

I'm quite interested in PEP 337: Logging Usage in the Standard
Library, and here is my question:

The PEP prosopals 'print' and 'sys.stdout.write' to be replaced with
'_log.{debug|info}', but

1 shouldn't it be {warning|error|critical}?

2 and in addition to logging errors, should we always log important
  data (such as http header in urllib2)? As I understand it, if it's
  logged as DEBUG or INFO, it won't hurt performance unless logging
  level is explicitly set to DEBUG/INFO. When using urllib2 I had to
  inspect its internal with debugger if something goes wrong. With
  logging things would be much easier.

Regards,
Liu Jin