On Wed, 11 Jan 2006, Steve Haley wrote:
> I need to do something very simple but I'm having trouble finding the way to
> do it - at least easily. I have created a tuple and now need to find the
> position of individual members of that tuple. Specifically, the tuple is
> something like: words = ("you", "me", "us", "we", "and", "so", "forth") and
> I need to be able to name a member, for example, "us" and find what the
> position (index) of that word is in the tuple.
Does it have to be a tuple? If you make it a list, you can use index():
>>> words = ["you", "me", "us", "we", "and", "so", "forth"]
>>> words.index("and")
4
If it must be a tuple, you can't do that directly:
>>> words = ("you", "me", "us", "we", "and", "so", "forth")
>>> words.index("and")
Traceback (most recent call last):
File "<stdin>", line 1, in ?
AttributeError: 'tuple' object has no attribute 'index'
but you can wrap it in a list conversion:
>>> words = ("you", "me", "us", "we", "and", "so", "forth")
>>> list(words).index("and")
4
I'm not sure why tuple wouldn't have this capability; but it doesn't.
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