Pakkaus

pakkaus = input("")
purettu = ""
osat = []
osa = ""
numerot = "1234567890"
kirjaimet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

for i in range (len(pakkaus)):
    merkki = pakkaus[i]
    if merkki in numerot and len(osa) != 0 and osa[len(osa) - 1] in kirjaimet:
        osat.append(osa)
        osa = ""
    if ":" not in osa and merkki in kirjaimet:
        osa += ":"
    osa += merkki
osat.append(osa)

for osa in osat:
    palat = osa.split(":")
    for i in range (int(palat[0])):
        purettu += palat[1]

print (purettu)

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED