[Tutor] Python 3 dictionary questions

[bob gailer]

On 11/23/2011 8:04 AM, Cranky Frankie wrote:
> In playing around with Pyton 3 dictionaries I've come up with 2 questions
>
> 1) How are duplicate keys handled? For example:
>
> Qb_Dict = {"Montana": ["Joe", "Montana", "415-123-4567",
> "joe.montana at gmail.com","Candlestick Park"],
> "Tarkington": ["Fran", "651-321-7657", "frank.tarkington at gmail.com",
> "Metropolitan Stadidum"],
> "Namath": ["Joe", "212-222-7777", "joe.namath at gmail.com", "Shea Stadium"],
> "Elway": ["John", "303-9876-333", "john.elway at gmai.com", "Mile High Stadium"],
> "Elway": ["Ed", "303-9876-333", "john.elway at gmai.com", "Mile High
> Stadium"],
> "Manning": ["Archie","504-888-1234", "archie.manning at gmail.com",
> "Louisiana Superdome"],
> "Staubach": ["Roger","214-765-8989", "roger.staubach at gmail.com",
> "Cowboy Stadium"]}
>
> print(Qb_Dict["Elway"],"\n")                        # print a dictionary entry
>
> In the above the "wrong" Elway entry, the second one, where the first
> name is Ed, is getting printed. I just added that second Elway row to
> see how it would handle duplicates and the results are interesting, to
> say the least.

Seems like you answered your first question. Dictionaries do not have 
duplicate keys. Your 2nd assignment using the key "Elway" replaced the 
first.
>
> 2) Is there a way to print out the actual value of the key, like
> Montana would be 0, Tarkington would be 1, etc?
Actual value? The actual value of Montana" is "Montana". Sounds like you 
want the index of the entry as though it were in a list. Dictionaries 
are not ordered so you can't get that unless you store it as part of the 
value.

-- 
Bob Gailer
919-636-4239
Chapel Hill NC