def Vvod():
    File = open('S.txt','w')
    for i in range(7):
        File.write(input('Введите элемент файла: ')+'\n')
    File.close()
    File = open('S.txt')
    File.close()
def Sort():
    File = open('S.txt')
    dop=File.read()
    File.close()
    dop=dop.replace('\n','')
    for i in range(len(dop)):
        for j in range(i,len(dop)):
            if int(dop[i])>int(dop[j]):
                dop=dop[0:i]+dop[j]+dop[i]+dop[i+1:j]+dop[j+1:]
    File = open('S.txt','w')
    for i in range(len(dop)):
        if i!=len(dop)-1:
            File.write(dop[i]+'\n')
        else:
            File.write(dop[i])
    File.close()
def Print():
    File = open('S.txt')
    read=File.read()
    print(read)
    File.close()

Vvod()
Sort()
Print()