Knowing an item's location in an array

2018-06-09 08:54:47

This question already has an answer here:

Finding the index of an item given a list containing it in Python 23 answers

Use the index() method on list.

See Finding the index of an item given a list containing it in Python:

>>> ["foo","bar","baz"].index('bar')
1

index(arg) returns the index of arg within a list. So you would do:

from random import shuffle
deck = [value + suit for value in range(1, 11) + list ("AJQK") for suit in "HCDS"] + ["J1", "J2"]

shuffle(deck)

idx = deck.index('J1')
deck[idx: idx+2] = deck[idx: idx+2].reverse()

链接地址: http://www.djcxy.com/p/28118.html

上一篇: 查找元素在列表中的索引

下一篇: 了解项目在阵列中的位置