比較文件差別

import sys
a=sys.argv[1]
b=sys.argv[2]
one=open(a,'rb').read() 
two=open(b,"rb").read() 
m=[] 
ok=[] 
for i in one.split("\n"): 
        if not i is "": 
                for j in two.split("\n"): 
                        if not j is "": 
                                if  i == j: 
                                        ok.append(j) 
                                else: 
                                        m.append(j) 

print "====================[OK]" 
print "\n".join(ok)
for i in ok: 
        sum=-1 
        for j in m: 
                sum=sum+1 
                if i == j: 
                        m.pop(sum) 


print "================[no]" 
print "\n".join(list(set(m)))