Convert bytes to bits in python

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Another way to do this is by using the bitstring module:

>>> from bitstring import BitArray
>>> input_str="0xff"
>>> c = BitArray(hex=input_str)
>>> c.bin
'0b11111111'

And if you need to strip the leading 0b:

>>> c.bin[2:]
'11111111'

The bitstring module isn’t a requirement, as jcollado‘s answer shows, but it has lots of performant methods for turning input into bits and manipulating them. You might find this handy (or not), for example:

>>> c.uint
255
>>> c.invert()
>>> c.bin[2:]
'00000000'

etc.

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