Calc.py

masukan = input('Masukkan data : ')
angka = []
operator = []
penampung = ''
for i in range(len(masukan)):
    if masukan[i] == '*' or masukan[i] == '/' or masukan[i] == '+' or masukan[i] == '-':
        angka.append(int(penampung))
        operator.append(masukan[i])
        penampung = ''
    else:
        penampung = penampung + masukan[i]

operator.insert(0, '')
angka.append(int(penampung))
hasil = angka[0]
for a in range(1, len(angka)):
    if a < len(operator) + 1:
        if (operator[a] == '+'):
            hasil = hasil + angka[a]
        elif (operator[a] == '-'):
            hasil = hasil - angka[a]
        elif (operator[a] == '/'):
            hasil = hasil / angka[a]
        elif (operator[a] == '*'):
            hasil = hasil * angka[a]

print('hasil dari perhitungan = ', hasil)