# Compare two strings and return the first different position if they are different
# If the same returns 0
def cmpstr(str1, str2):
col = 0
for c1, c2 in zip(str1, str2):
if c1 == c2:
col += 1
continue
else :
break
# How do you get out of the loop, and there's another case where the string length is different
if c1 != c2 or len(str1) != len(str2):
return col+1
else :
return 0
file1 = open("a.txt",'r')
file2 = open("b.txt",'r')
fa = file1.readlines()
fb = file2.readlines()
file1.close()
file2.close()
# with GBK Decode so that Chinese characters can be processed
fa = [ str.decode("gbk") for str in fa]
fb = [ str.decode("gbk") for str in fb]
row = 0
col = 0
# Start comparing the contents of the two files
for str1, str2 in zip(fa, fb):
col = cmpstr(str1,str2)
# col=0 So these two rows are equal
if col == 0 :
row += 1
continue
else:
break
# If one line is different, or the file length is different
if str1 != str2 or len(fa) != len(fb):
# Print out different row and column orders, and print out different preceding and following sentences
# The last two characters are different
print "row:", row+1, "col:", col
print "file a is:n", fa[row-1],fa[row][:col+1], "n"
print "file b is:n", fb[row-1],fb[row][:col+1], "n"
else :
print "All are same!"
raw_input("Press Enter to exit.")