python programming help

[YBM]

Le 08.12.2013 19:14, rafaellasav at gmail.com a écrit :
> On Sunday, December 8, 2013 6:07:47 PM UTC, YBM wrote:
>> Le 08.12.2013 18:59, rafaellasav at gmail.com a �crit :
>>
>>> i have a dictionary with names and ages for each name.
>>
>>> I want to write a function that takes in an age and returns
>>
>>> the names of all the people who are that age.
>>
>>> please help
>>
>>
>>
>> ageDict = { 'john':42, 'jane':36, 'paul':42 }
>>
>> peopleWithAge = lambda age: [ name for name in ageDict if
>>
>> 			      ageDict[name]==age]
>
>
> sorry but i'm new to python ;p
> 1. it has to be in a form of a function called people and
> 2. how this code takes in an age and returns the names?

  >>> ageDict = { 'john':42, 'jane':36, 'paul':42 }
  >>> people = lambda age: [ name for name in ageDict if
  ...                           ageDict[name]==age]
  >>> people(42)
  ['paul', 'john']