Compare 2 lists in file and save result in another file

I have 2 lists recorded in files (File1.txt and File2.txt) and I need to compare line by line and record the amount of equal occurrences in the Output.txt file.

However, the result written to the output is incorrect. See below the code I used and the result obtained and the desired:

input_file1 = open('C:\Temp\File1.txt', 'r')
input_file2 = open('C:\Temp\File2.txt', 'r')
output_file = open('C:\Temp\Output.txt','w')

match = 0
strOutput = ""

for line1 in input_file1:
    LST1 = list(line1)
    input_file2.seek(0)
    output_file.write('n')
    for line2 in input_file2:
        LST2 = list(line2)
        match = len(set(LST1).intersection(set(LST2)))
        strOutput = str(match) + ','  + line2
        output_file.write("%s" %(strOutput))
                        
output_file.close()
input_file2.close()
input_file1.close()

input_file1:
01,04,07,23,39
03,05,08,37,45
02,03,10,13,28

input_file2:
01,02,03,21,22,23,27
03,05,10,13,37,39,47

output (INCORRECT!):
7,01,02,03,21,22,23,27
7,03,05,10,13,37,39,47
5,01,02,03,21,22,23,27
6,03,05,10,13,37,39,47
5,01,02,03,21,22,23,27
4,03,05,10,13,37,39,47

output (CORRECT):
2,01,02,03,21,22,23,27
1,03,05,10,13,37,39,47
1,01,02,03,21,22,23,27
3,03,05,10,13,37,39,47
2,01,02,03,21,22,23,27
3,03,05,10,13,37,39,47

OR:

output (CORRECT):
2,1,2,3,21,22,23,27
1,3,5,10,13,37,39,47
1,1,2,3,21,22,23,27
3,3,5,10,13,37,39,47
2,1,2,3,21,22,23,27
3,3,5,10,13,37,39,47

Answer

Here is the fixed code:

input_file1 = open('File1.txt', 'r')
input_file2 = open('File2.txt', 'r')
output_file = open('Output.txt','w')

match = 0
strOutput = ""

for line1 in input_file1:
    LST1 = line1.strip().split(',')
    input_file2.seek(0)
    output_file.write('n')
    for line2 in input_file2:
        LST2 = line2.strip().split(',')
        match = len(set(LST1).intersection(set(LST2)))
        strOutput = str(match) + ','  + line2
        output_file.write("%s" %(strOutput))
                        
output_file.close()
input_file2.close()
input_file1.close()

There are two main issues:

1- The original line: LST1 = list(line1) wasn’t generating the correct list, ending with a list of: ['0' , '1' , ',' , '0' , ....] instead of ['01','02',...]

2- In your originaly document, you have a new line character at the end of every line, thus your line1 looks like this: '01,04,07,23,39n' To solve this, we remove the last 2 character.

With both of those changes, you end up with this line:

LST1 = line1.strip().split(',')

Where .strip() removes the new line character, and .split(',') splits it correctly.

Running that code gave me this output:

2,01,02,03,21,22,23,27
1,03,05,10,13,37,39,47
1,01,02,03,21,22,23,27
3,03,05,10,13,37,39,47
2,01,02,03,21,22,23,27
3,03,05,10,13,37,39,47