python - 如何修复“Python 返回方法不返回串联字符串中的整数

Question

当代码运行时它会输出，但不是按要求输出，它会在所有百分比上返回空白

def income():
    num= raw_input("Enter your Income: ")
    print "Your income is: %d " % int(num)
    return num
income= income()

def bills_expenses():
    bills_kitty=0
    bills_kitty=(income*(55/100))
    return  ("Your bills kitty should have: ", bills_kitty)

def long_term_savings():
    long_term_savings_kitty=(10/100)*income
    return "Your long term kitty should have: ",  long_term_savings_kitty

def play_and_leisure():
    play_and_leisure_kitty=(10/100)*income
    return "Your play and leisure kitty should have: " , play_and_leisure_kitty


def education_personal_growth():
    education_personal_growth_kitty=(10/100)*income
    return "Your personal growth  kitty should have: ", education_personal_growth_kitty


def pay_myself_Financial_fredom():
    pay_myself_Financial_fredom_kitty=(10/100)*income
    return "Your pay yourself kitty should have: ", pay_myself_Financial_fredom_kitty

def give_back_to_the_community():
    give_back_to_the_community_kitty=(5/100)*income
    return "Your giving back kitty should have: " , give_back_to_the_community_kitty



bills=bills_expenses()
long_term = long_term_savings()
play=play_and_leisure()
education=education_personal_growth()
mine=pay_myself_Financial_fredom()
give=give_back_to_the_community()


print bills
print long_term
print play
print education
print mine
print give

预期的结果是每个方法在调用时都应该输出百分比。但这就是我得到的。

Enter your Income: 200
Your income is: 200
('Your bills kitty should have: ', '')
('Your long term kitty should have: ', '')
('Your play and leisure kitty should have: ', '')
('Your personal growth  kitty should have: ', '')
('Your pay yourself kitty should have: ', '')
('Your giving back kitty should have: ', '')

我错过了什么？

Answer 1

您面临的问题是双重的。

raw_input 的输入类型是字符串，不会出错，因为

print "tata" * 2     # tatatata

是一个有效的字符串表示法 - 你一直乘以 0，所以你得到空字符串:''。

其次，您需要调整除法以返回 float 。

固定代码:

def get_income(): # See Prunes post
    num = float(raw_input("Enter your Income: "))
    print "Your income is: %d " % int(num)
    return num

income= get_income()

print(type(income))

def bills_expenses():
    bills_kitty=0
    bills_kitty=(income*(55/100.0))
    return  ("Your bills kitty should have: ", bills_kitty)

def long_term_savings():
    long_term_savings_kitty=(10/100.0)*income
    return "Your long term kitty should have: ",  long_term_savings_kitty

def play_and_leisure():
    play_and_leisure_kitty=(10/100.0)*income
    return "Your play and leisure kitty should have: " , play_and_leisure_kitty

def education_personal_growth():
    education_personal_growth_kitty=(10/100.0)*income
    return "Your personal growth  kitty should have: ", education_personal_growth_kitty

def pay_myself_Financial_fredom():
    pay_myself_Financial_fredom_kitty=(10/100.0)*income
    return "Your pay yourself kitty should have: ", pay_myself_Financial_fredom_kitty

def give_back_to_the_community():
    give_back_to_the_community_kitty=(5/100.0)*income
    return "Your giving back kitty should have: " , give_back_to_the_community_kitty

bills=bills_expenses()
long_term = long_term_savings()
play=play_and_leisure()
education=education_personal_growth()
mine=pay_myself_Financial_fredom()
give=give_back_to_the_community()


print bills
print long_term
print play
print education
print mine
print give

输出:

Enter your Income: Your income is: 200 
<type 'float'>
('Your bills kitty should have: ', 110.00000000000001)
('Your long term kitty should have: ', 20.0)
('Your play and leisure kitty should have: ', 20.0)
('Your personal growth  kitty should have: ', 20.0)
('Your pay yourself kitty should have: ', 20.0)
('Your giving back kitty should have: ', 10.0)

您将得到 float 不准确 - 请参阅 Is floating point math broken? - 您可以使用 round(3.2222,2) 舍入到 2 位小数。