返回函数的参数答案

【问题标题】：Return a parameter for a function返回函数的参数
【发布时间】：2020-12-18 01:49:55
【问题描述】：

如何创建三个函数？至少一个应该有一个参数，一个返回应该有至少一个返回值。

这是问题：

"在 custom.py 中添加至少三个新函数。其中至少一个函数应该在至少一个参数，并且其中至少一个应该至少有一个返回价值”

    enter code here# custom.py


def square(x):
    return x*x

def cube(x):
    return x*x*x

def circ(x):
    return x*x*x*x

def quad(x):
    return x*x*x*x*x

def sum():
    return square + cube + circ + quad





----

import custom # leave off the .py
def main():
 
    for num in range(25):
        print(num, end="\t")
        print(custom.square(num), end="\t")
        print(custom.cube(num), end="\t")
        print(custom.circ(num), end="\t")
        print(custom.quad(num))
        print(custom.sum)


    xmas= int(input("How many presents do you want? "))
    
    if xmas >10:
            print("You crazy!")
    elif xmas <10:
            print("That's not bad..")
            
    print("Done")
main()
 


-----
   
Output
    

0   0   0   0   0
<function sum at 0x7fc9f7aab430>
1   1   1   1   1
<function sum at 0x7fc9f7aab430>
2   4   8   16  32
<function sum at 0x7fc9f7aab430>
3   9   27  81  243
<function sum at 0x7fc9f7aab430>
4   16  64  256 1024
<function sum at 0x7fc9f7aab430>
5   25  125 625 3125
<function sum at 0x7fc9f7aab430>
6   36  216 1296    7776
<function sum at 0x7fc9f7aab430>
7   49  343 2401    16807
<function sum at 0x7fc9f7aab430>
8   64  512 4096    32768
<function sum at 0x7fc9f7aab430>
9   81  729 6561    59049
<function sum at 0x7fc9f7aab430>
10  100 1000    10000   100000
<function sum at 0x7fc9f7aab430>
11  121 1331    14641   161051
<function sum at 0x7fc9f7aab430>
12  144 1728    20736   248832
<function sum at 0x7fc9f7aab430>
13  169 2197    28561   371293
<function sum at 0x7fc9f7aab430>
14  196 2744    38416   537824
<function sum at 0x7fc9f7aab430>
15  225 3375    50625   759375
<function sum at 0x7fc9f7aab430>
16  256 4096    65536   1048576
<function sum at 0x7fc9f7aab430>
17  289 4913    83521   1419857
<function sum at 0x7fc9f7aab430>
18  324 5832    104976  1889568
<function sum at 0x7fc9f7aab430>
19  361 6859    130321  2476099
<function sum at 0x7fc9f7aab430>
20  400 8000    160000  3200000
<function sum at 0x7fc9f7aab430>
21  441 9261    194481  4084101
<function sum at 0x7fc9f7aab430>
22  484 10648   234256  5153632
<function sum at 0x7fc9f7aab430>
23  529 12167   279841  6436343
<function sum at 0x7fc9f7aab430>
24  576 13824   331776  7962624
<function sum at 0x7fc9f7aab430>
How many presents do you want? 10
Done
>>>

【问题讨论】：

你没有打电话给sum。添加括号以实际执行它：print(custom.sum())

标签： python function parameters

【解决方案1】：

您的sum 函数尝试对函数求和，而不是对函数的结果求和。（另外，将其命名为 sum 很糟糕，因为它会覆盖内置的 sum 函数！）它应该更像：

def sum_all_funcs(x):
    return square(x) + cube(x) + circ(x) + quad(x)

然后你应该用参数调用它：

print(custom.sum(num))

【讨论】：