Convert base-2 binary number string to int Convert base-2 binary number string to int python python

Convert base-2 binary number string to int


You use the built-in int() function, and pass it the base of the input number, i.e. 2 for a binary number:

>>> int('11111111', 2)255

Here is documentation for Python 2, and for Python 3.


Just type 0b11111111 in python interactive interface:

>>> 0b11111111    255


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

>>> from bitstring import BitArray>>> b = BitArray(bin='11111111')>>> b.uint255

Note that the unsigned integer is different from the signed integer:

>>> b.int-1

The bitstring module isn't a requirement, but it has lots of performant methods for turning input into and from bits into other forms, as well as manipulating them.


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