Re: Find index of item in list

[Steven Bethard]

wes weston wrote:
Sean Berry wrote:
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
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