在熊猫系列中查找元素的索引 - Find element's index in pandas Series

问题：

I know this is a very basic question but for some reason I can't find an answer.我知道这是一个非常基本的问题，但由于某种原因我找不到答案。 How can I get the index of certain element of a Series in python pandas?如何在 python pandas 中获取某个系列元素的索引？ (first occurrence would suffice) （第一次出现就足够了）

Ie, I'd like something like:即，我想要类似的东西：

import pandas as pd
myseries = pd.Series([1,4,0,7,5], index=[0,1,2,3,4])
print myseries.find(7) # should output 3

Certainly, it is possible to define such a method with a loop:当然，可以用循环定义这样的方法：

def find(s, el):
    for i in s.index:
        if s[i] == el: 
            return i
    return None

print find(myseries, 7)

but I assume there should be a better way.但我认为应该有更好的方法。 Is there?有没有？

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解决方案：

参考一： https://en.stackoom.com/question/1Etqq
参考二： https://stackoom.com/question/1Etqq