Marco Mariani wrote:
If the lines are really sorted, all you really need is a merge,
For the archives, and for huge files where /usr/bin/diff or difflib are
not appropriate, here it is.
#!/usr/bin/env python
import sys
def run(filea, fileb):
p = 3
while True:
if p&1: a = filea.readline()
if p&2: b = fileb.readline()
if not a or not b:
break
elif a == b:
p = 3
elif a < b:
sys.stdout.write('-%s' % a)
p = 1
elif b < a:
sys.stdout.write('+%s' % b)
p = 2
for line in filea.readlines():
sys.stdout.write('-%s' % line)
for line in fileb.readlines():
sys.stdout.write('+%s' % line)
if __name__ == '__main__':
run(file(sys.argv[1]), file(sys.argv[2]))
--
http://mail.python.org/mailman/listinfo/python-list
