Add Base2 encoding methods (Base2MSBF and Base2LSBF) to the Base64 module

[FajarKim]

Feature or enhancement

Proposal:

I propose adding new encoding methods to the Base64 module to support Base2 encoding with two variations:

• Base2MSBF (Most Significant Bit First)
• Base2LSBF (Least Significant Bit First)

These methods are designed to enable bit-level encoding with configurable bit order:

• Base2MSBF: Arranges bits from the most significant to the least significant.
• Base2LSBF: Arranges bits from the least significant to the most significant.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Linked PRs

• gh-127977: Add Base2 encoding methods (Base2MSBF and Base2LSBF) to the Base64 module #127978

[picnixz]

Hi, thanks for the suggestion but this can be achieved natively and does not require an additional function for base64. This module is meant to host the functions described by RFC 4648 and "base-2" encoding is not part of it.

One could however imagine adding some "binarify" method to binascii which has hexlify but transforming bytes to their binary representation can be achieved using format. Similarly if you want to change the bit order, then it would suffice to reverse the sequence.

I'm closing this one as not planned but feel free to open a discourse proposal (after checking if a similar feature has already been requested): https://discuss.python.org/c/ideas/6 or ask for help on https://discuss.python.org/c/help/7 if you need help. I don't see much the usecase for it, especially if there are one-liners alternatives.