Python 2.4 Compatibiity

Sets for python-2.3

In python-2.4, a builtin set type was added to python. This module provides a function to emulate that on python-2.3 by using the sets module.

set()
Create a set. If running on python 2.4+ this is the set constructor. If using python-2.3, it’s sets.Set.
frozenset()
Create a frozenset. If running on python2.4+ this is the frozenset constructor. If using python-2.3, it’s sets.ImmutableSet.

Changed in version 0.2.0: API: kitchen.pycompat24 1.0.0 Added set and frozenset

kitchen.pycompat24.sets.add_builtin_set()

Partial new style base64 interface

Implement the modern base64 interface.

Python-2.4 and above have a new API for the base64 module. This is a backport of that module for use on python-2.3.

See also

base64
for information about using the functions provided here.
kitchen.pycompat24.base64.b16decode(s, casefold=False)

Decode a Base16 encoded byte string.

s is the byte string to decode. Optional casefold is a flag specifying whether a lowercase alphabet is acceptable as input. For security purposes, the default is False.

The decoded byte string is returned. binascii.Error is raised if s were incorrectly padded or if there are non-alphabet characters present in the string.

kitchen.pycompat24.base64.b16encode(s)

Encode a byte string using Base16.

s is the byte string to encode. The encoded byte string is returned.

kitchen.pycompat24.base64.b32decode(s, casefold=False, map01=None)

Decode a Base32 encoded byte string.

s is the byte string to decode. Optional casefold is a flag specifying whether a lowercase alphabet is acceptable as input. For security purposes, the default is False.

RFC 3548 allows for optional mapping of the digit 0 (zero) to the letter O (oh), and for optional mapping of the digit 1 (one) to either the letter I (eye) or letter L (el). The optional argument map01 when not None, specifies which letter the digit 1 should be mapped to (when map01 is not None, the digit 0 is always mapped to the letter O). For security purposes the default is None, so that 0 and 1 are not allowed in the input.

The decoded byte string is returned. binascii.Error is raised if the input is incorrectly padded or if there are non-alphabet characters present in the input.

kitchen.pycompat24.base64.b32encode(s)

Encode a byte string using Base32.

s is the byte string to encode. The encoded byte string is returned.

kitchen.pycompat24.base64.b64decode(s, altchars=None, validate=False)

Decode a Base64 encoded byte string.

s is the byte string to decode. Optional altchars must be a string of length 2 which specifies the alternative alphabet used instead of the ‘+’ and ‘/’ characters.

The decoded string is returned. A binascii.Error is raised if s is incorrectly padded.

If validate is False (the default), non-base64-alphabet characters are discarded prior to the padding check. If validate is True, non-base64-alphabet characters in the input result in a binascii.Error.

kitchen.pycompat24.base64.b64encode(s, altchars=None)

Encode a byte string using Base64.

s is the byte string to encode. Optional altchars must be a byte string of length 2 which specifies an alternative alphabet for the ‘+’ and ‘/’ characters. This allows an application to e.g. generate url or filesystem safe Base64 strings.

The encoded byte string is returned.

kitchen.pycompat24.base64.decode(input, output)

Decode a file; input and output are binary files.

kitchen.pycompat24.base64.decodebytes(s)

Decode a bytestring of base-64 data into a bytestring.

kitchen.pycompat24.base64.decodestring(input, output)

Decode a file; input and output are binary files.

kitchen.pycompat24.base64.encode(input, output)

Encode a file; input and output are binary files.

kitchen.pycompat24.base64.encodebytes(s)

Encode a bytestring into a bytestring containing multiple lines of base-64 data.

kitchen.pycompat24.base64.encodestring(input, output)

Encode a file; input and output are binary files.

kitchen.pycompat24.base64.standard_b64decode(s)

Decode a byte string encoded with the standard Base64 alphabet.

s is the byte string to decode. The decoded byte string is returned. binascii.Error is raised if the input is incorrectly padded or if there are non-alphabet characters present in the input.

kitchen.pycompat24.base64.standard_b64encode(s)

Encode a byte string using the standard Base64 alphabet.

s is the byte string to encode. The encoded byte string is returned.

kitchen.pycompat24.base64.urlsafe_b64decode(s)

Decode a byte string encoded with the standard Base64 alphabet.

s is the byte string to decode. The decoded byte string is returned. binascii.Error is raised if the input is incorrectly padded or if there are non-alphabet characters present in the input.

The alphabet uses ‘-‘ instead of ‘+’ and ‘_’ instead of ‘/’.

kitchen.pycompat24.base64.urlsafe_b64encode(s)

Encode a byte string using a url-safe Base64 alphabet.

s is the byte string to encode. The encoded byte string is returned. The alphabet uses ‘-‘ instead of ‘+’ and ‘_’ instead of ‘/’.

Subprocess

See also

kitchen.pycompat27.subprocess
Kitchen includes the python-2.7 version of subprocess which has a new function, check_output(). When you import pycompat24.subprocess you will be getting the python-2.7 version of subprocess rather than the 2.4 version (where subprocess first appeared). This choice was made so that we can concentrate our efforts on keeping the single version of subprocess up to date rather than working on a 2.4 version that very few people would need specifically.