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Convert int to binary string in Python

How do I convert an integer into a binary string in Python?

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    Or just use format(integer, 'b'). bin() is a debugging tool, specifically aimed at producing the Python binary integer literal syntax, format() is meant to produce specific formats. Commented Dec 10, 2015 at 10:21
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    @MartijnPieters Thank you very much for mentioning it. I've adjusted my solutution. How do you know that bin() is a debugging tool aimed at producing the Python binary integer literal syntax? I couldn't find that in the documentation. Commented Dec 10, 2015 at 10:36
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    From the documentation: The result is a valid Python expression. It's aim is to produce a Python expression, not to produce end-user representations. The same applies to oct() and hex(). Commented Dec 10, 2015 at 10:37
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    More alternatives: If you are going to make the width dynamic, instead of str.zfill() you could use str.format() or format() with a dynamic second argument: '{0:0{1}b}'.format(x, n) or format(b, '0{}b'.format(n)). Commented Dec 10, 2015 at 10:41
  • @MartijnPieters Wow, thank you very much for this input! I didn't know that this was possible with format. However, I think my current answer with zfill is easier to read and understand than the dynamic second argument, so I'll keep that. Commented Dec 10, 2015 at 10:45

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