Allow developers to not have to either test on N Python versions or
looked through multiple versions of the docs to know whether they can
easily update.

Patch by Swati Jaiswal.

* There are only two base-64 alphabets defined by the RFCs, not three
* Due to the internal translation, plus (+) and slash (/) are never discarded
* standard_ and urlsafe_b64decode() discard characters as well

Also update the doc strings to clarify data types, based on revision
92760d2edc9e, correct the exception raised by b16decode(), and correct the
parameter name for the base-85 functions.

base64.b64encode() uses it to avoid a memory copy.

base32, ascii85 and base85 codecs in the base64 module, and delay the
initialization of the unquote_to_bytes() table of the urllib.parse module, to
not waste memory if these modules are not used.

noticed by Claudiu Popa.

This mostly affected the encodebytes and decodebytes function
(which are used by base64_codec)

Also added a test to ensure all bytes-bytes codecs can handle
memoryview input and tests for handling of multidimensional
and non-bytes format input in the modern base64 API.

non-alphabet characters present in the input string to conform a docstring.
Updated the module documentation.

Patch by Catalin Iacob.

Patch by Neil Tallim.  This provides a mechanism for module
users to achieve RFC 3548 compliance in the cases where ignoring
non-base64-alphabet input characters is *not* mandated by the RFC that
references RFC 3548.

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r85497 | antoine.pitrou | 2010-10-14 23:15:17 +0200 (jeu., 14 oct. 2010) | 3 lines

  Explicitly close some files (from issue #10093)
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r85497 | antoine.pitrou | 2010-10-14 23:15:17 +0200 (jeu., 14 oct. 2010) | 3 lines

  Explicitly close some files (from issue #10093)
........

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r81533 | victor.stinner | 2010-05-25 23:12:34 +0200 (mar., 25 mai 2010) | 3 lines

  Issue #4769: Fix main() function of the base64 module, use sys.stdin.buffer and
  sys.stdout.buffer (instead of sys.stdin and sys.stdout) to use the bytes API
........

sys.stdout.buffer (instead of sys.stdin and sys.stdout) to use the bytes API

svn+ssh://svn.python.org/python/branches/py3k

........
  r73656 | mark.dickinson | 2009-06-29 00:08:40 +0200 (Mo, 29 Jun 2009) | 1 line

  Fix description of range_length_obj
........
  r73658 | raymond.hettinger | 2009-06-29 00:30:13 +0200 (Mo, 29 Jun 2009) | 1 line

  Small doc fix-ups to floatingpoint.rst.  More are forthcoming.
........
  r73663 | raymond.hettinger | 2009-06-29 01:21:38 +0200 (Mo, 29 Jun 2009) | 1 line

  Clean-up floating point tutorial.
........
  r73666 | alexandre.vassalotti | 2009-06-29 03:13:41 +0200 (Mo, 29 Jun 2009) | 2 lines

  Make b64encode raises properly a TypeError when altchars is not bytes.
........

#3613: add base64.encodebytes and decodebytes as the new spelling of encodestring and decodestring; deprecate the latter.

and str (unicode) patterns get full unicode matching by default. The re.ASCII
flag is also introduced to ask for ASCII matching instead.

This also exposed some bugs in urlib2 and email.base64mime, which I
tried my best to fix. However, someone will probably have to double
check.

No detailed change log; just check out the change log for the py3k-pep3137
branch.  The most obvious changes:

  - str8 renamed to bytes (PyString at the C level);
  - bytes renamed to buffer (PyBytes at the C level);
  - PyString and PyUnicode are no longer compatible.

I.e. we now have an immutable bytes type and a mutable bytes type.

The behavior of PyString was modified quite a bit, to make it more
bytes-like.  Some changes are still on the to-do list.

see a better way; the 'Binary' class is poorly specified so it's unclear
what behavior is relied upon.

Change binascii.Error to derive from ValueError
and raise binascii.Error everywhere where values are bad
(why on earth did the old code use TypeError?!?).

  and .keys(), .items(), .values() return dict views.

The dict views aren't fully functional yet; in particular, they can't
be compared to sets yet.  but they are useful as "iterator wells".

There are still 27 failing unit tests; I expect that many of these
have fairly trivial fixes, but there are so many, I could use help.

There's one major and one minor category still unfixed:
doctests are the major category (and I hope to be able to augment the
refactoring tool to refactor bona fide doctests soon);
other code generating print statements in strings is the minor category.

(Oh, and I don't know if the compiler package works.)

(Rough first cut.)

(a) "except E, V" -> "except E as V"
(b) V is now limited to a simple name (local variable)
(c) V is now deleted at the end of the except block