[Tutor] changing dictionary to lowercase

[Albert-Jan Roskam]

It would be nice to generalize the solution so it could also handle
definitions={"Deprecated": "No longer in use", "DEPRECATED":  "No longer in use"}
These are unique now, but after turning them into lower case not anymore. 
new_d = {}
for d in definitions:
    try:
        new_d[d.lower()].append(definitions[d])
    except TypeError:
        new_d[d.lower()] = [definitions[d]]
 

Cheers!!
Albert-Jan


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>________________________________
>From: Joel Goldstick <joel.goldstick at gmail.com>
>To: tutor at python.org
>Sent: Thursday, October 27, 2011 8:36 PM
>Subject: Re: [Tutor] changing dictionary to lowercase
>
>
>
>
>
>On Thu, Oct 27, 2011 at 2:25 PM, ADRIAN KELLY <kellyadrian at hotmail.com> wrote:
>
>
>>Hi all,
>>is it possible to change a dictionary list to lowercase..without having to retype?
>>e.g. definitions={"Deprecated": "No longer in use", "Depreciation": "fall in value of an asset"}
>> 
>>i have tried definitions=definitions.lower()
>> 
>>regards
>>adrian
>>
>>
>>_______________________________________________
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>>
>>There is a string method called lower so 'Bob'.lower() will return 'bob'
>
>You can't alter the keys in a dictionary because they are immutable -- they can't be changed
>
>But you can loop through your dictionary, make new keys lowercase and copy the values associated with each key
>
>like this:
>
>>>> new_d = {}
>
>>>> for d in definitions:
>...   new_d[d.lower()] = definitions[d]
>... 
>>>> new_d
>{'deprecated': 'No longer in use', 'depreciation': 'fall in value of an asset'}
>>>> 
>
>
>
>
>-- 
>Joel Goldstick
>
>
>_______________________________________________
>Tutor maillist  -  Tutor at python.org
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