如何按值从Python列表中删除项目? [英] How do I remove an item from a Python list by value?

问题描述

如果我想按项目的值而不是其索引删除项目，我该怎么办?

If I wanted to remove an item by its value instead of its index what would I do?

animals = ['tiger', 'snake', 'penguin','giraffe']

说我想删除'penguin'而不键入del animals[2]怎么办?

Say I wanted to remove 'penguin' without typing del animals[2] how would I go about it?

我尝试输入del animals['penguin']，但是它不起作用...

I've tried typing del animals['penguin'] but it doesn't work...

推荐答案

animals.remove("penguin")

对吗?授予它只会删除第一个值，但是它将按值删除它，而不是索引.并且不需要构建新列表或需要额外的调用来查找给定值的索引.

Right? Granted it only removes the first value, but it will remove it by value not index. And will not require building a new list or require an extra call to lookup the index of the given value.

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