#NOW FOR EACH LINE IN MATCHING LINES, IF LINE IN TXT FILE, REMOVE FROM TXT FILE #lines to be deleted matchinglines = open("1-matchinglines.txt") matchinglines = matchinglines.readlines() #lines not found in the two files alllines = open("2-alllines.txt", "r") alllines = alllines.readlines() unmatchinglines = open("unmatchinglines.txt", "w+") whatsleft = [] for line in alllines: # print("=============") # print(line) for match in matchinglines: # print(match) # print("---------") if match == line: # print("True") line = line.replace(match,"") # print(line) whatsleft.append(line) whatsleft.sort() # print(whatsleft) for leftover in whatsleft: unmatchinglines.write(leftover)