Find Size and Free Space of the Filesystem Containing a Given File

Find size and free space of the filesystem containing a given file

If you just need the free space on a device, see the answer using os.statvfs() below.

If you also need the device name and mount point associated with the file, you should call an external program to get this information. df will provide all the information you need -- when called as df filename it prints a line about the partition that contains the file.

To give an example:

import subprocess
df = subprocess.Popen(["df", "filename"], stdout=subprocess.PIPE)
output = df.communicate()[0]
device, size, used, available, percent, mountpoint = \
    output.split("\n")[1].split()

Note that this is rather brittle, since it depends on the exact format of the df output, but I'm not aware of a more robust solution. (There are a few solutions relying on the /proc filesystem below that are even less portable than this one.)

Get hard disk size in Python

For Python 2 till Python 3.3

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Notice: As a few people mentioned in the comment section, this solution will work for Python 3.3 and above. For Python 2.7 it is best to use the psutil library, which has a disk_usage function, containing information about total, used and free disk space:

import psutil

hdd = psutil.disk_usage('/')

print ("Total: %d GiB" % hdd.total / (2**30))
print ("Used: %d GiB" % hdd.used / (2**30))
print ("Free: %d GiB" % hdd.free / (2**30))

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Python 3.3 and above:

For Python 3.3 and above, you can use the shutil module, which has a disk_usage function, returning a named tuple with the amounts of total, used and free space in your hard drive.

You can call the function as below and get all information about your disk's space:

import shutil

total, used, free = shutil.disk_usage("/")

print("Total: %d GiB" % (total // (2**30)))
print("Used: %d GiB" % (used // (2**30)))
print("Free: %d GiB" % (free // (2**30)))

Output:

Total: 931 GiB
Used: 29 GiB
Free: 902 GiB

Python script to verify disk space output from Linux

you can try this:

>>> import subprocess
>>> threshold = 10
>>> child = subprocess.Popen(['df', '-h'], stdout=subprocess.PIPE)
>>> output = child.communicate()[0].strip().split("\n")
>>> for x in output[1:]:
...     if int(x.split()[-2][:-1]) >= threshold:
...         print x

This will List all filesystem that disk usage is 10% or more than 10%

How to find out the free disk space for a given path on a linux shell?

Try df -h

Better yet: df -h . or df -h path-to-file

Bytes returned by disk_usage from the shutil library doesn't match the directory file size

shutil.disk_usage() returns statistics for the entire disk (filesystem, volume), not just for the specific directory you pass in.

To compute disk space used by one directory and its subdirectories, see: Calculating a directory's size using Python?

For a good introduction to some of the potential pitfalls, see: https://blogs.msdn.microsoft.com/oldnewthing/20041228-00/?p=36863

Get actual disk space of a file

st = os.stat(…)
du = st.st_blocks * st.st_blksize

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