Help Understanding Some Code

[gontajones]

0b indicates that the number is in a binary representation and 0x in a hexadecimal representation.

>>> 0b011
3
>>> 0x011
17
>>> 

011 in binary is: 2²*0 + 2¹*1 + 2⁰ * 1 = 3 (decimal)
011 in hexa is: 16²*0 + 16¹*1 + 16⁰ * 1 = 17 (decimal)