Collect and Query votes using a Dictionary

[DDCane]

i need to make a dictonary that works like so:

when u type:

vote(dict,person): it should vote for that person in question by modifying the dictionary and if the person does not exist it creates the person and places a vote for them.

votes(dict,person): it shows how many votes that person in question has and zero if a nmae is tyoed that isnt in the dictionary.

result(dict): shows who has the most votes.

hope yall understand. Thanks!

[bartonc]

i need to make a dictonary that works like so:

when u type:

vote(dict,person): it should vote for that person in question by modifying the dictionary and if the person does not exist it creates the person and places a vote for them.

votes(dict,person): it shows how many votes that person in question has and zero if a nmae is tyoed that isnt in the dictionary.

result(dict): shows who has the most votes.

hope yall understand. Thanks!

Here's one way:

>>> def vote(votesDict, name):
...     votes = votesDict.get(name, 0)
...     votes += 1
...     votesDict[name] = votes
...     
>>> dd = {}
>>> vote(dd, 'barton')
>>> def votes(votesDict, name):
...     votes = votesDict.get(name, 0)
...     return votes
... 
>>> votes(dd, 'barton')
1
>>> vote(dd, 'barton')
>>> vote(dd, 'bruce')
>>> def result(dd):
...     for (name, count) in dd.items():
...         yield "%s got %d %s" %(name, count, ('votes', 'vote')[count == 1])
...         
>>> for res in result(dd):
...     print res
...     
bruce got 1 vote
barton got 2 votes
>>> 

[bartonc]

Here's one way:

>>> def vote(votesDict, name):
...     votes = votesDict.get(name, 0)
...     votes += 1
...     votesDict[name] = votes
...     
>>> dd = {}
>>> vote(dd, 'barton')
>>> def votes(votesDict, name):
...     votes = votesDict.get(name, 0)
...     return votes
... 
>>> votes(dd, 'barton')
1
>>> vote(dd, 'barton')
>>> vote(dd, 'bruce')
>>> def result(dd):
...     for (name, count) in dd.items():
...         yield "%s got %d %s" %(name, count, ('votes', 'vote')[count == 1])
...         
>>> for res in result(dd):
...     print res
...     
bruce got 1 vote
barton got 2 votes
>>> 

That last line could be a tiny bit more efficient and a lot less readable like this:

yield "%s got %d vote%s" %(name, count, ('s', '')[count == 1])

[bartonc]

That last line could be a tiny bit more efficient and a lot less readable like this:

yield "%s got %d vote%s" %(name, count, ('s', '')[count == 1])

After reviewing your question, the last one is not quite as simple as the others.
I took into account that there might be a tie or ties:

>>> vote(dd, 'bruce')
>>> def result(dd):
...     winners = []  # handle ties
...     nVotes = 0
...     for (name, count) in dd.items():
...         if count == nVotes: # a tie
...             winners.append(name)
...         elif count > nVotes:
...             winners = [name]
...             nVotes = count
...     if len(winners) > 1:
...         res = (len(winners), ", ".join(winners[:-1]), winners[-1], nVotes, ('s', '')[nVotes == 1])
...         return "There was a %d way tie between %s and %s. Each had %d vote%s" %res
...     return "%s won with %d vote%s." %(winners[0], count, ('s', '')[count == 1])
... 
>>> print result(dd)
There was a 2 way tie between bruce and barton. Each had 2 votes
>>>