私はPythonの初心者で、この宿題では投資の将来価値を得る必要があります。
p = raw_input("[How much did you invest?]:")
r = str(raw_input("[How much is the interest rate?]:"))
n = raw_input("[How long have you been investing?]:")
future_value = p*(1+1)**n
print "\n\n\tYour future value of your investment is: %s\n" % future_value
エラーコード:
unsupported operand type(s) for ** or pow(): 'int' and 'str'
ヘルプはありますか?