Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #52586

Re: How to I do this in Python ?

Show all headers | View raw

In article <mailman.614.1376636762.1251.python-list@python.org>,
 Ganesh Pal <ganesh1pal@gmail.com> wrote:

>  # Creating sparse files in the sparse path
>      sparse_path = os.path.join(path,'sparsefiles')
>      os.makedirs(sparse_path)
>      os.chdir(sparse_path)
>      sparsefiles = "dd if=/dev/zero of=sp1 count=0 bs=1 seek=10G"
>      process_0 = subprocess.Popen(sparsefiles, stdout=subprocess.PIPE,
> stderr=subprocess.PIPE, shell=True)

There is no need to shell out to dd just to do this.  All dd is doing 
for you is seeking to the offset you specify and closing the file.  You 
can do that entirely in Python code.

http://docs.python.org/2.7/library/stdtypes.html#file.seek

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

How to I do this in Python ? Ganesh Pal <ganesh1pal@gmail.com> - 2013-08-16 11:51 +0530
  Re: How to I do this in Python ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-08-16 10:59 +0000
    Re: How to I do this in Python ? Ganesh Pal <ganesh1pal@gmail.com> - 2013-08-18 22:36 +0530
      Re: How to I do this in Python ? Steven D'Aprano <steve@pearwood.info> - 2013-08-19 07:27 +0000
        Re: How to I do this in Python ? Ganesh Pal <ganesh1pal@gmail.com> - 2013-08-28 10:10 +0530
  Re: How to I do this in Python ? Roy Smith <roy@panix.com> - 2013-08-16 07:47 -0400
    Re: How to I do this in Python ? random832@fastmail.us - 2013-08-16 14:17 -0400

csiph-web