python - 允许用户从多个函数中进行选择以在 Python 中运行的最佳方式是什么？

Question

我有 20 个文件，每个文件都定义了自己的函数。文件集是相关的。每个文件定义一项运动和一个年龄组。因此，作为示例，这些函数存在，每个函数都在自己的单独文件中:

footballAdults()
footballTeens()
footballKids()
tennisAdults()
tennisTeens()

...等等

我想允许用户通过主文件调用其中任何一个，过滤他们的选择，如下所示:

x = input("Pick a sport:")
y = input ("Pick an age group:")

然后，程序会过滤用户的选择来运行用户选择的功能。

除了做一个巨大的 if...elif...elif...elif...else 语句之外，还有更好的方法来做到这一点吗？还是我一直这样做？

示例:

from footballAdults import footballAdults
from footballTeens import footballTeens
from footballKids import footballKids
from tennisAdults import tennisAdults
#this would continue on until all 20 files have had their functions imported

x = input("Pick a sport:")
y = input ("Pick an age group:")

if x == ("football") and y == ("adults")
    footballAdults()
elif x == ("football") and y == ("teens")
    footballTeens()
elif x == ("football") and y == ("kids")
    footballKids()
elif x == ("tennis") and y == ("adults")
    tennisAdults()
#this would continue on until the final else statement
#cycling through all 20 functions

Answer 1

使用字典调度程序:

from footballAdults import footballAdults
from footballTeens import footballTeens
from footballKids import footballKids
from tennisAdults import tennisAdults

x = input("Pick a sport:")
y = input ("Pick an age group:")

d = {('football', 'adults'): footballAdults,
     ('football', 'teens'): footballTeens,
     ('football', 'kids'): footballKids,
     ('tennis', 'adults'): tennisAdults}

d[(x, y)]()

说明

• 将元组键(x 和 y 的匹配值)与函数值一起存储在字典中。
• 通过字典调用您的函数。