how to compare lines in two files are same or different in python

Question

I have two files which contains following lines:

file1:
6.959999999:    LOG_MOD_L0_RECEIVE_TXBRP_CONTROL(0, 
 0x0059005f, 
 0x0049006d, 
 0x00b9008b, 
 0x001         


        

Answer 1

You'll first need to solve the problem of locating the right, matching section. The following generator function will produce the section information you are looking for:

def find_sections(filename, text):
    with open(filename) as fin:
        section = None
        for line in fin:
            if text in line:
                section = line.rpartition('(')[-2:]
                try:
                    while ')' not in line:
                        line = next(fin)
                        section.append(line)
                except StopIteration:
                    pass  # ran out of file to read
                yield ''.join(section)
            else:
                previous = line

To test if the same data exists in both files, read one first and collect all data in a set:

output1_string=raw_input("Enter the String of file1:")
sections1 = set(find_sections("C:\\Python27\\output1.txt", output1_string))

Now you can find matching entries in the other file by doing a set intersection:

output2_string=raw_input("Enter the String of file2:")
sections2 = find_sections("C:\\Python27\\output2.txt", output1_string)
for match in sections1.intersection(sections2):
    print 'Found a match:'
    print match