Slacy’s Blog

Just in case you were wondering… The interleaver that I posted below can be easily implemented in Python. The result looks like this:

#!/usr/bin/python
import sys
outputs = []
numargs = 0
for arg in sys.argv[1:]:
  outputs.append(open(arg, 'a'))
  numargs += 1

s = "empty"
counter = 0
while s:
  s = sys.stdin.readlines( 4096 * 8 )
  outputs[counter % numargs].writelines(s)
  counter += 1

But, its signicantly slower than the native C version. The C version can do about 1GB in 3 seconds. The Python version takes 24s to do the same thing. (8 times slower).

Granted, I didn’t try very hard to optimize the Python (yet!)

This entry was posted on Thursday, June 12th, 2008 at 9:30 pm and is filed under General. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.