Python int to binary string?

StackOverflow

Are there any canned Python methods to convert an Integer (or Long) into a binary string in Python?

There are a myriad of dec2bin() functions out on Google... But I was hoping I could use a built-in function / library.

Answer rating: 927

Python"s string format method can take a format spec.

>>> "{0:b}".format(37)
"100101"

Format spec docs for Python 2

Format spec docs for Python 3

Answer rating: 565

If you"re looking for bin() as an equivalent to hex(), it was added in python 2.6.

Example:

>>> bin(10)
"0b1010"




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