python script to concatenate all the files in the directory into one file -

i have written following script concatenate files in directory 1 single file.

can optimized, in terms of

1. idiomatic python

2. time

here snippet:

import time, glob  outfilename = 'all_' + str((int(time.time()))) + ".txt"  filenames = glob.glob('*.txt')  open(outfilename, 'wb') outfile:     fname in filenames:         open(fname, 'r') readfile:             infile = readfile.read()             line in infile:                 outfile.write(line)             outfile.write("\n\n") 

use shutil.copyfileobj copy data:

import shutil  open(outfilename, 'wb') outfile:     filename in glob.glob('*.txt'):         if filename == outfilename:             # don't want copy output output             continue         open(filename, 'rb') readfile:             shutil.copyfileobj(readfile, outfile) 

shutil reads readfile object in chunks, writing them outfile fileobject directly. not use readline() or iteration buffer, since not need overhead of finding line endings.

use same mode both reading , writing; important when using python 3; i've used binary mode both here.