python_reference/useful_scripts/conc_gzip_files.py
2014-04-01 15:59:49 -04:00

29 lines
923 B
Python

# Sebastian Raschka 03/2014
import gzip
import os
def conc_gzip_files(in_dir, out_file, append=False):
""" Reads contents from gzipped ASCII or UTF-8 files, decodes them, and
appends the lines to one output file.
Keyword arguments:
in_dir (str): Path of the directory with the gzip-files
out_file (str): Path to the resulting file
append (bool): If true, it appends contents to an exisiting file,
else creates a new output file.
"""
write_mode = 'bw'
if append:
write_mode = 'ba'
gzips = [os.path.join(in_dir, i) for i in os.listdir(in_dir) if i.endswith('.gz')]
with open(out_file, write_mode) as ofile:
for f in gzips:
with gzip.open(f, 'rb') as gzipf:
for line in gzipf:
ofile.write(line)
if __name__ == '__main__':
conc_gzip_files('/home/usr/my_dir', '/home/usr/test.txt')