import re
    sentence=input('enter sentence')
    punctuation=(re.findall(r"[w'"]+|[.,!?;:_-]", sentence))
    print(punctuation)
    positions = [punctuation.index(x) for x in punctuation]
    print(positions)
    test1=(",".join(str(i) for i in positions))
    words=" ".join(sorted(set(punctuation), key=punctuation.index))
    print(words)
    with open('1.txt', 'w') as f:#this creates the name of the file called task 2 which will contain my data ad allows the computer to locate the fle and add in the data. The 'w' makes the file writable so i can add in my data, without it displaying an error, using f as a variable.
         f.write(str(words))
    with open('2.txt', 'w') as f:
         f.write(str(test1))
    f.close()
    openfile=input('what is your file name for the compressed sentence?')
    openfile = open(openfile, "r")
    print ( openfile.read())
    openfile=input('what is your file name for the compressed positions?')
    openfile = open(openfile, "r")
    print ( openfile.read())

    openfile = open('1.txt', "r")

    test=openfile.read()
     #print(test)

    blankarray=[]

    for i in test.split(" "):
         blankarray.append(i)

    #print(blankarray)


    openfile.close

    openfile = open('2.txt', "r")

    test=openfile.read()
     #print(test)

    blankarray2=[]

    for i in test.split(","):
         blankarray2.append(int(i))

    #print(blankarray2)
    openfile.close


    blankstring=""

    for i in range(len(blankarray2)):
         #print(i)
         blankstring=blankstring+blankarray[blankarray2[i]] + " "
    print(blankstring)