Question

In order to convert an integer to a binary, I have used this code:

>>> bin(6)
'0b110'

and when to erase the ‘0b’, I use this:

>>> bin(6)[2:]
'110'

What can I do if I want to show 6 as 00000110 instead of 110?

Answer 1

>>> '{0:08b}'.format(6)
'00000110'

Just to explain the parts of the formatting string:

• {} places a variable into a string
• 0 takes the variable at argument position 0
• : adds formatting options for this variable (otherwise it would represent decimal 6)
• 08 formats the number to eight digits zero-padded on the left
• b converts the number to its binary representation

If you’re using a version of Python 3.6 or above, you can also use f-strings:

>>> f'{6:08b}'
'00000110'