How to compare two strings with difflib

gistfile1.py

>>> import difflib
>>> for opcode in difflib.SequenceMatcher(None, "This is a test.", "That is a tent").get_opcodes():
...     print opcode
... 
('equal', 0, 2, 0, 2)
('replace', 2, 4, 2, 4)
('equal', 4, 12, 4, 12)
('replace', 12, 13, 12, 13)
('equal', 13, 14, 13, 14)
('delete', 14, 15, 14, 14)
>>> for block in difflib.SequenceMatcher(None, "This is a test.", "That is a tent").get_matching_blocks():
...     print block
... 
Match(a=0, b=0, size=2)
Match(a=4, b=4, size=8)
Match(a=13, b=13, size=1)
Match(a=15, b=14, size=0)
>>> 

i meant thanks for this script! but the previos one was cool too - mark