使用函數的輸出作爲另一個函數python中的輸入編碼

Question

# any help is greatly appreciated new to this stuff 

def total_bases(int1,int2,int3,int4): 
    """(int, int, int, int) -> integer 
    Return the total number of bases covered 
    >>>total_bases(2,3,4,5) 
    40 
    """ 

    return int1+2*int2+3*int3+4*int4 

def slugging_percentage(total_bases,int5): 
    """ (total_bases, int5) -> float # so for instance i need the product of the first function for the second function 
    Return the slugging percentage given the total number of bases covered and the total number at bat(int5) 
    >>>slugging_percentage(20,9) 
    2.22 
    """ 

    return total_bases/int5 

def on_base_percentage(h,bb,hbp,ab,sf): 
    """(int,int,int,int,int) -> float 
    Return the on-base percentage given the hits, base on balls, hit by pitch, at bats and sacrfice hits 
    >>>on_base_percentage(1,2,3,4,5) 
    0.43 
    """ 

    return (h+bb+hbp)/(ab+bb+hbp+sf) 

def on_base_plus_slugging(on_base_percentage,slugging_percentage): 
    """(float,float) -> float # as well as for this 
    Return the on-base plus slugging given the on-base percentage and the slugging percentage 
    >>>on_base_plus_slugging(1.0,2.0) 
    3.0 
    """ 

    return on_base_percentage+slugging_percentage 

def OPS_value(on_base_plus_slugging): 
    """(float) -> string 
    Return the on-base plus slugging value given the on-base plus slugging score range 
    >>>OPS_value(0.8234) 
    B 
    """ 
if on_base_plus_slugging > 0.9000: 
    return "A" 
elif on_base_plus_slugging > 0.7667: 
    return "B" 
elif on_base_plus_slugging > 0.7000: 
    return "C" 
else on_base_plus_slugging < 0.7000: 
    return "F" 
elif on_base_plus_slugging == 0.7000: 
    return "F" 

Answer 1

將全局變量保存爲一種方法。

def some_function(): 
     global var  #This is a global variable 
     #Do things to variable 

另一種方式，我相信你正在尋找的是調用一個函數內的函數。這應該是這樣的：

def function_1(#some variable): 
     #Stuff could be up here 
     num = function2(5) 
     #Stuff could be down here 

def function_2(a_number): 
     a_number = a_number*2 
     return a_number 

這將使變量num = 5 * 2。

我希望這會有所幫助。

Answer 2

函數可以返回值。您可以將這些值存儲爲變量。然後你可以使用這些值作爲其他函數的輸入。

我想你試圖用on_base和slugging百分比來計算OPS_value。

因此，您將計算on_base,total_bases和slugging並將返回的值存儲在變量中。

然後您將這些變量作爲輸入傳遞給您的OPS_value函數，該函數返回最終的計算值。

見下面的例子：

def OPS_value(percent): 
    """(float) -> string 
    Return the on-base plus slugging value given the on-base plus slugging score range 
    >>>OPS_value(0.8234) 
    B 
    """ 

    if percent > 0.9000: 
     return "A" 
    elif percent > 0.7667: 
     return "B" 
    elif percent > 0.7000: 
     return "C" 
    else: 
     return "F" 

total_bases = total_bases(2, 3, 4, 5) # Get the return value for total_bases 

slugging = slugging_percentage(total_bases, 9) # Get the return value for slugging_percent 
on_base = on_base_percentage(1, 2, 3, 4, 5) 
print OPS_value(on_base + slugging) # using on_base + slugging as input 

我們正在試圖做的是保持與計算每一件事情total_bases，slugging等分開算算。

你原來的代碼的另一個主要變化是你不需要有一個函數來添加兩個值。 你可以也應該在一行中做到這一點。