Harp tuning

Question 3 (15/15)

n = str(input())
start = 0
lst = []
for i in range(1,len(n)):
    j = i-1
    if (n[i].isalpha() and n[j].isdigit()):
       lst.append(n[start:i])
       start = i
lst.append(n[start:len(n)+1])

for string in lst:
    chord = ""
    instruc = ""
    times = ""
    tune = ""
    for char in string:
        if char.isalpha():
            chord += char
        elif char.isdigit():
            times += char
        else:
            instruc += char

    if instruc == "+":
        tune = "tighten"
    else:
        tune = "loosen"

    print(chord+" "+tune+" "+times)oo