Question

我所拥有的是：

present_tense = ["say","make","go",'take','come','see',"know", "get", "give", "find", "think", "tell", "become", "feel", "leave"]
past_tense = ["said","made",...]

我希望程序搜索raw_input中引入的单词是否在present_tense中，如果是，则检索位于相同位置的past_tense列表中的元素。

目前这就是我所拥有的，但我想有一种巧妙的方式。

def pasttense(verb):
    if verb in present_tense [0]:           
      pastform = "said"
    elif verb in present_tense [1]:
      pastform = "made"
    elif verb in present_tense [2]:
      pastform = "went"
    elif verb in present_tense [3]:
      pastform = "took"

Answer 1

尝试这样的事情

pastform = past_tense[present_tense.index(verb)]

但如果verb不在present_tense，则引发异常

因此，如果不期望例外情况，您可以在verb

中查看present_tense

if verb in present_tense:
    pastform = past_tense[present_tense.index(verb)]

在一个列表中查找元素（在i位置）并返回另一个列表的元素（在相同的i位置）

1 个答案: