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54 lines
1.1 KiB
Python
54 lines
1.1 KiB
Python
"""
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Author: Doug Latornell
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Licence: MIT
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URL: http://code.activestate.com/recipes/577081/
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"""
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import doctest
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def humanize_bytes(n, precision=2):
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"""Return a humanized string representation of a number of bytes.
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Assumes `from __future__ import division`.
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>>> humanize_bytes(1)
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'1 byte'
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>>> humanize_bytes(1024)
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'1.0 kB'
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>>> humanize_bytes(1024 * 123)
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'123.0 kB'
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>>> humanize_bytes(1024 * 12342)
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'12.1 MB'
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>>> humanize_bytes(1024 * 12342, 2)
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'12.05 MB'
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>>> humanize_bytes(1024 * 1234, 2)
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'1.21 MB'
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>>> humanize_bytes(1024 * 1234 * 1111, 2)
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'1.31 GB'
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>>> humanize_bytes(1024 * 1234 * 1111, 1)
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'1.3 GB'
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"""
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abbrevs = [
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(1 << 50, 'PB'),
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(1 << 40, 'TB'),
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(1 << 30, 'GB'),
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(1 << 20, 'MB'),
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(1 << 10, 'kB'),
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(1, 'bytes')
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]
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if n == 1:
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return '1 byte'
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for factor, suffix in abbrevs:
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if n >= factor:
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break
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return '%.*f %s' % (precision, n / factor, suffix)
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if __name__ == '__main__':
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doctest.testmod()
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