simple deleting problem

[aLiase]

I need some help figuring out what the problem on this. It actually a simple program that just read lines that has comment of #, if it does it delete that line and moves on. But for some reason it not working very well.

#!/bin/python
input = open('/boot/config', 'r')
output = open('/tmp/config', 'w')
lines = input.readlines()
number = 0
for line in lines:
    if line[0] == "#":
        del lines[number]
    else: number += 1
for y in range(len(lines)):
    output.writelines('%s' % lines[y])
output.close()
 

Thanks.

[woooee]

input.close()
for line in lines:
   line=line.strip()
   if not line.startswith( "#" ):
      output.write('%s\n' % (line))
output.close()