Find index of item in list

[Sean Berry]

Given

myList = ['cat', 'dog', 'mouse' ... 'bear']

what is the easiest way to find out what index 'dog' is at?

 

[wes weston]

Given

myList = ['cat', 'dog', 'mouse' ... 'bear']

what is the easiest way to find out what index 'dog' is at?


Sean,

>>> myList = ['cat', 'dog', 'mouse','bear']
>>> myList.index('dog') 1
>>>

wes

 

[Steven Bethard]

myList = ['cat', 'dog', 'mouse' ... 'bear']

what is the easiest way to find out what index 'dog' is at?

myList = ['cat', 'dog', 'mouse','bear']
myList.index('dog') 1

Yup, list.index is almost certainly what you want, though it's worth
mentioning that list.index returns the *first* occurrence of the item in
the list. You can get later items by supplying an appropriate starting
index:

>>> my_list = ['cat', 'dog', 'mouse', 'bear', 'dog']
>>> my_list.index('dog') 1
>>> my_list.index('dog', 2) 4
>>> my_list.index('dog', 5)

Traceback (most recent call last):
File "<interactive input>", line 1, in ?
ValueError: list.index(x): x not in list

Steve