在Python中访问多维列表

Question

I have a list as follows in my python script: 我的python脚本中有以下列表：

a = [["iguana","i"],["mycat","m"]]

I want to access individual elements of the list and print them: 我想访问列表的各个元素并打印它们：

print a[0,0]
print a[1,1]

But this throws "TypeError: list indices must be integers, not tuple". 但这会引发“ TypeError：列表索引必须是整数，而不是元组”。

How can I access individual elements of the list? 如何访问列表中的各个元素？

Thanks 谢谢

Answer 1

Index them one at a time: 一次将它们编入索引：

>>> a = [["iguana","i"],["mycat","m"]]
>>> a[0]
['iguana', 'i']
>>> a[0][0]
'iguana'
>>> a[1][0]
'mycat'
>>>

The first [n] indexes list a , which returns a list, and the second indexes that list. 第一个[n]索引列出a ，它返回一个列表，第二个索引列出该列表。