Question

我已经创造了一种方法来获得板球比赛的折腾。我需要使用toss()的结果在另一个fucntion结果的if语句中用作条件（）

import random
tos = input("Choose head or tail \n")
def toss():
     if tos == "head":
          result = ["Bat", "Bowl"]
          r =print(random.choice(result))
     elif tos == "tail":
            result = ["Bat", "Bowl"]
            r =print(random.choice(result))
     else:
           print("ERROR!")
toss()
def result():
    # i need the value in toss either bat or bowl to be used in if
     if r =="Bat":
        runs = ["1" , "2","3","4","5","6","7","8","9","0","W",]
        runs_2=print(random.choice(runs))

result()

Answer 1

首先你必须return抛出的结果，然后将它分配给你作为参数传递给result的变量

import random
tos = input("Choose head or tail \n")
def toss():
  if tos == "head":
      result = ["Bat", "Bowl"]
      r =print(random.choice(result))
  return r
 elif tos == "tail":
        result = ["Bat", "Bowl"]
        r =print(random.choice(result))
    return r
 else:
       print("ERROR!")

myToss = toss()#instantiation of return from function

def result(r)
    if r =="Bat":
        runs = ["1" , "2","3","4","5","6","7","8","9","0","W",]
        runs_2=print(random.choice(runs))

result(myToss) #added parameter

Answer 2

首先，您的函数应该为tos设置一个参数。使用全局变量可能会导致麻烦，应尽量避免。

此外，您正在r功能中设置toss()变量。这意味着r仅存在于toss()的范围内，并且在其外部不可用。

其次，即使r是toss()中设置的全局变量，由于print不返回任何内容，r始终为None。您必须删除print。

第三，不要使用全局变量来获取函数的输出（除非你真的需要）。相反，你应该return。

def toss(tos):
    result = ["Bat", "Bowl"]
    if tos == "head":
        r = random.choice(result)
    elif tos == "tail":
        r = random.choice(result)
    else:
        raise ValueError("You must choose 'head' or 'tail'")
    print(r)
    return r

def result(this_is_NOT_r):
    if this_is_NOT_r =="Bat":
        runs = ["1" , "2","3","4","5","6","7","8","9","0","W",]
        return random.choice(runs)

print(result(toss(input("Choose head or tail \n"))))

如何将函数的结果作为数据用于另一个？

2 个答案: