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cbwar/size.py

Last active January 9, 2024 09:09
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Python: Human readable file size
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size.py
def sizeof_fmt(num, suffix='o'):
"""Readable file size
:param num: Bytes value
:type num: int
:param suffix: Unit suffix (optionnal) default = o
:type suffix: str
:rtype: str
"""
for unit in ['', 'k', 'M', 'G', 'T', 'P', 'E', 'Z']:
if abs(num) < 1024.0:
return "%3.1f %s%s" % (num, unit, suffix)
num /= 1024.0
return "%.1f%s%s" % (num, 'Yi', suffix)
@aphor
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aphor commented Nov 30, 2020

I got tired of rewriting these little functions from scratch, now I just import my library. For maximum convenience, it works with str.format() support. It has all the sizes in NIST/IEC and SI units and conventional nonstandard units.

>>> from datasize import DataSize
>>> 'My new {:GB} SSD really only stores {:.2GiB} of data.'.format(DataSize('750GB'),DataSize(DataSize('750GB') * 0.8))
'My new 750GB SSD really only stores 558.79GiB of data.'

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