python programming help

rafaellasav at gmail.com rafaellasav at gmail.com
Sun Dec 8 19:42:16 CET 2013


On Sunday, December 8, 2013 6:32:31 PM UTC, rafae... at gmail.com wrote:
> On Sunday, December 8, 2013 6:27:34 PM UTC, bob gailer wrote:
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> > On 12/8/2013 12:59 PM, rafaellasav at gmail.com wrote:
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> > 
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> > > 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.
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> > > please help
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> > Welcome to the python list. Thanks for posting a question.
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> > If you were hoping for one of us to write the program for you ... well 
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> > that's not what we do on this list.
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> > Please post the code you have so far and tell us exactly where you need 
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> > help.
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> > Also tell us what version of Python, what OS, and what you use to write 
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> > and run Python programs.
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> name = ['Alice', 'Bob', 'Cathy', 'Dan', 'Ed', 'Frank', 'Gary', 'Helen', 'Irene', 'Jack', 'Kelly', 'Larry']
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> age = [20, 21, 18, 18, 19, 20, 20, 19, 19, 19, 22, 19]
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> dic={}
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> def combine_lists(name,age):
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>     for i in range(len(name)):
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>         dic[name[i]]= age[i]
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> combine_lists(name,age)
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> print dic
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> 
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> def people(age):
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>     people=lambda age: [name for name in dic if dic[name]==age]
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> people(20)
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> this is the code i have so far(with the help of the first post ;p). i understand how a function and a dictionary works and what I'm asked to find. but i don't get the lambda age part. and this code doesn't give me any result

and I'm sorry but this is the first time i ask for help in a forum and i just didn't know how it works. I'm not looking for someone to do my homework i just need someone to help me with my code :)



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