Python script to list files of zero size. Takes in a filepath of a textfile containing a list of filepaths and looks if the list contains files with filesize of zero. The filepaths of files with zero size are stored to file named the original filepath of the list prefixed _zeros

findzeros.py

"""
List files of zero size.

Takes in a filepath of a textfile containing a list of filepaths
and looks if the list contains files with filesize of zero.

The filepaths of files with zero size are stored to file named
the original filepath of the list prefixed _zeros

Example Usage
    > cat listfile
        /home/me/foo_666B.txt
        /home/me/bar_420B.txt
        /home/me/baz_0B.txt
    > python findzeros.py listfile
    > cat listfile_zeros
        /home/me/baz_0B.txt

Author
    Akseli Palen <akseli.palen@gmail.com>
    
Version
    2013-08-29

Used with
    python 2.7.3
"""
import os

def findzeros(listfilepath):
    zerolist = open(listfilepath + '_zeros', 'a')
    with open(listfilepath) as f:
        # http://stackoverflow.com/a/12330535/638546
        filepaths = f.read().splitlines()
        
        for fp in filepaths:
            
            fsize = os.path.getsize(fp)
            
            if fsize == 0:
                zerolist.write(fp + '\n')
    
    zerolist.close()

if __name__ == "__main__":
    import sys
    abs_filepath = os.path.abspath(sys.argv[1])
    findzeros(abs_filepath)