How to get the size of tar.gz in (MB) file in python

Question

I am doing backups in python script but i need to get the size of tar.gz file created in MB

How can i get the size in MB of that file

Do you want the size of the uncompressed file that's inside the archive or do you just want the size of the archive itself? — plaes, May 21 '11 at 08:11
See also: [Reusable library to get human readable version of file size?](http://stackoverflow.com/a/1094933/562769) — Martin Thoma, Aug 28 '14 at 15:53

score 40 · Accepted Answer · edited May 23 '17 at 12:09

40

It's not clear from your question whether you want to the compressed or uncompressed size of the file, but in the former case, it's easy with the os.path.getsize function from the os module

>>> import os
>>> os.path.getsize('flickrapi-1.2.tar.gz')
35382L

To get the answer in megabytes you can shift the answer right by 20, e.g.

os.path.getsize('large.tar.gz') >> 20

Although that operation will be done in integers - if you want to preserve fractions of a megabyte, divide by (1024*1024.0) instead. (Note the .0 so that the divisor will be a float.)

Update: In the comments below, Johnsyweb points out a useful recipe for more generally producing human readable representations of file sizes.

edited May 23 '17 at 12:09

Community

1
1

answered May 21 '11 at 08:17

Mark Longair

415,589
70
403
320

it means i have to divide by 1024*1024 to make it in MB – Mahakaal May 21 '11 at 08:18
3

See also this recipe [to get a human-readable representation of a number of bytes](http://code.activestate.com/recipes/577081-humanized-representation-of-a-number-of-bytes/). – johnsyweb May 21 '11 at 08:36
1

@Johnsyweb: thanks for the suggestion, I've edited the answer to add that link. – Mark Longair May 21 '11 at 08:53

score 2 · Answer 2 · answered May 21 '11 at 08:12

2

Use the os.stat() function to get a stat structure. The st_size attribute of that is the size of the file in bytes.

answered May 21 '11 at 08:12

Keith

40,128
10
53
74

(+1) Seems much better than my idea (I initially thought the OP wants to assess what's in the tar file too). – chl May 21 '11 at 08:23

score 1 · Answer 3 · edited Jan 15 '22 at 02:50

1

To get file size in MB, I created this function:

import os

def get_size(path):
    size = os.path.getsize(path)
    if size < 1024:
        return f"{size} bytes"
    elif size < 1024*1024:
        return f"{round(size/1024, 2)} KB"
    elif size < 1024*1024*1024:
        return f"{round(size/(1024*1024), 2)} MB"
    elif size < 1024*1024*1024*1024:
        return f"{round(size/(1024*1024*1024), 2)} GB"

>>> get_size("k.tar.gz")
1.4MB

edited Jan 15 '22 at 02:50

Flair

2,123
1
24
39

answered Jan 12 '22 at 14:11

jak bin

71
1
3

Elegant codes <3 – Kaizendae May 25 '22 at 12:01

score 0 · Answer 4 · answered May 21 '11 at 08:13

0

According to Python on-line docs, you should look at the size attributes of a TarInfo object.

answered May 21 '11 at 08:13

chl

25,925
5
49
71

@Mahakaal It works with `*.tar` file too (just read it with the `r` flag and not `r:gz` passed to `tarfile.open`). However, it gives the size of each element included in the tar file (easy to sum up, though), so maybe one of the alternative answer might better suit your needs. – chl May 21 '11 at 08:21

manjesh23 · Answer 5 · 2020-08-15T17:55:51.397

0

You can use the below command to get it directly without any hazel

os.path.getsize('filename.tar') >> 20
print str(filename.tgz) + " MB"

edited Aug 15 '20 at 17:55

answered Aug 15 '20 at 15:08

manjesh23

347
1
3
19

How to get the size of tar.gz in (MB) file in python

5 Answers5