調用另一個函數內部的函數

Question

更具體地說，我想從 calc_gross_pay中調用函數get_hours_worked。我意識到另一種做法是將參數傳遞給calc_gross_pay，但是我想知道我想要做什麼是可能的。我有一種感覺，它不是。謝謝你的幫助。

def main(): 
# 
    print("This employee's gross pay for two weeks is:",calc_gross_pay()) 


def get_input(): 

    def get_hours_worked(): 
     #get_hours_worked 
     x = float(input("How many hours worked in this two week period?  ")) 
     return x 

    def get_hourly_rate(): 
     #get_hourly_rate() 

     y = float(input("What is the hourly pay rate for this employee? ")) 
     return y 

def calc_gross_pay(): 
    # 
    gross = get_input(get_hours_worked) * get_input(get_hourly_rate) 
    return gross 

main() 

Answer 1

這是您的代碼的重組版本。我們將其定義爲get_input內部的get_hours_worked和get_hourly_rate，我們將它們定義爲單獨的函數，這些函數稱爲get_input。

def get_input(prompt): 
    return float(input(prompt)) 

def get_hours_worked(): 
    return get_input("How many hours worked in this two week period? ") 

def get_hourly_rate(): 
    return get_input("What is the hourly pay rate for this employee? ") 

def calc_gross_pay(): 
    return get_hours_worked() * get_hourly_rate() 

def main(): 
    print("This employee's gross pay for two weeks is:", calc_gross_pay()) 

main() 

演示

How many hours worked in this two week period? 50 
What is the hourly pay rate for this employee? 20.00 
This employee's gross pay for two weeks is: 1000.0 

Answer 2

由於PM 2Ring指出的那樣，它能夠更好地更改層級本身。但如果你仍然想要，請按照以下步驟操作：

def get_input(): 

    def get_hours_worked(): 
     x = float(input("How many hours worked in this two week period?  ")) 
     return x 

    def get_hourly_rate(): 
     y = float(input("What is the hourly pay rate for this employee? ")) 
     return y 

    return get_hours_worked, get_hourly_rate       # IMP 

def calc_gross_pay(): 
    call_worked, call_rate = get_input()        # get the functions 
    gross = call_worked() * call_rate()        # call them 
    return gross  


def main(): 
    print("This employee's gross pay for two weeks is:",calc_gross_pay()) 

    #How many hours worked in this two week period? 3 
    #What is the hourly pay rate for this employee? 4 
    #This employee's gross pay for two weeks is: 12.0 

main()