Python: How do I convert from binary to base64 and back?

Question

Lets say I have some binary value:

0b100

and want to convert it to base64

doing base64.b64decode(0b100) tells me that

Answer 1

How large is your binary value? If it can fit in a single byte, then you can use chr.

>>> base64.b64encode(chr(255))
'/w=='

Otherwise I think you'll have to get the individual bytes out of it with some exponential math and arrange them in big-endian or little-endian, calling chr multiple times. (Edit: yan's answer with the struct module is easier :)

Also, I should note that the binary integer syntax is just that, syntax. The interpreter sees it as just another integer.

>>> (0b0).__class__