Python bin() built-in function

From the Python 3 documentation Convert an integer number to a binary string prefixed with “0b”. The result is a valid Python expression. If x is not a Python int object, it has to define an index() method that returns an integer.

Examples¶

>>> bin(1)
# '0b1'

>>> bin(10)
# '0b1010'

>>> bin(100)
# '0b1100100'

>>> bin(1000)
# '0b1111101000'