FilesExpand file tree

 master

/

humansize.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

65 lines (53 loc) · 2.47 KB

 master

/

humansize.py

Copy path

Top

File metadata and controls

• Code
• Blame

65 lines (53 loc) · 2.47 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

'''Convert file sizes to human-readable form.

Available functions:

approximate_size(size, a_kilobyte_is_1024_bytes)

takes a file size and returns a human-readable string

Examples:

>>> approximate_size(1024)

'1.0 KiB'

>>> approximate_size(1000, False)

'1.0 KB'

'''

SUFFIXES = {1000: ['KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],

1024: ['KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB']}

def approximate_size(size, a_kilobyte_is_1024_bytes=True):

'''Convert a file size to human-readable form.

Keyword arguments:

size -- file size in bytes

a_kilobyte_is_1024_bytes -- if True (default), use multiples of 1024

if False, use multiples of 1000

Returns: string

'''

if size < 0:

raise ValueError('number must be non-negative')

multiple = 1024 if a_kilobyte_is_1024_bytes else 1000

for suffix in SUFFIXES[multiple]:

size /= multiple

if size < multiple:

return '{0:.1f} {1}'.format(size, suffix)

raise ValueError('number too large')

if __name__ == '__main__':

print(approximate_size(1000000000000, False))

print(approximate_size(1000000000000))

# Copyright (c) 2009, Mark Pilgrim, All rights reserved.

#

# Redistribution and use in source and binary forms, with or without modification,

# are permitted provided that the following conditions are met:

#

# * Redistributions of source code must retain the above copyright notice,

# this list of conditions and the following disclaimer.

# * Redistributions in binary form must reproduce the above copyright notice,

# this list of conditions and the following disclaimer in the documentation

# and/or other materials provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'

# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.