Finding differences between strings

Question

I have the following function that gets a source and a modified strings, and bolds the changed words in it.

def appendBoldChanges(s1, s2):
    \"Adds &l         


        

Answer 1

You could use difflib, and do it like this:

from difflib import Differ

def appendBoldChanges(s1, s2):
    "Adds  tags to words that are changed"
    l1 = s1.split(' ')
    l2 = s2.split(' ')
    dif = list(Differ().compare(l1, l2))
    return " ".join([''+i[2:]+'' if i[:1] == '+' else i[2:] for i in dif 
                                                           if not i[:1] in '-?'])

print appendBoldChanges("britney spirs", "britney sprears")
print appendBoldChanges("sora iro days", "sorairo days")
#Output:
britney sprears
sorairo days