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| 1 | import math | |
| 2 | ||
| 3 | def format_bytes(n): | |
| 4 | ||
| 5 | units = ('', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB')
| |
| 6 | base = 1024 | |
| 7 | - | decrement_threshold = 0.1 |
| 7 | + | decrement_threshold = 0.2 |
| 8 | divisor_max = len(units) - 1 | |
| 9 | ||
| 10 | exponent = math.log(n, base) if n > 0 else 0 | |
| 11 | remainder = exponent % 1 | |
| 12 | exponent = int(exponent) # implicit floor | |
| 13 | ||
| 14 | decrement = int(0 < remainder < decrement_threshold) | |
| 15 | divisor = max(0, exponent - decrement) | |
| 16 | divisor = min(divisor, divisor_max) | |
| 17 | ||
| 18 | quotient = int(n/(base**divisor)) # implicit floor | |
| 19 | unit = units[divisor] | |
| 20 | return "{} {}".format(quotient, unit) |
