>>yes, you're iterating over the keys of a dictionary. Since it only has the
>>key "E", that's what you get. Try printing dir(results) to see what methods
>>might return something other than the key. Make the language work for you.
>Sorry I am not smart. value?
Dictionaries {} are containers for key/value based pairs like { key : value,
another_key : value(can be same or repeated) }
For example:
{'B': [0, 0, 0, 0, 0, 0], 'E': [2, 1, 4, 0, 1, 0]}
The keys here are 'B' and 'E'. The values here are [0, 0, 0, 0, 0, 0] (for key
'B') and [2, 1, 4, 0, 1, 0] (for key 'E')
You can get the value of a dictionary by doing: value = dictionary[key]
You can set the value of a dictionary by doing: dictionary[key] = value
You will get an exception if you try to get a value for a key that is not in
the dictionary.
>>> dictionary = {'B': [0, 0, 0, 0, 0, 0], 'E': [2, 1, 4, 0, 1, 0]}
>>> dictionary['F']
KeyError: 'F'
You can iterate over dictionaries in a couple ways
1-
for key in dictionary: # also the same as
# for key in dictionary.keys()
value = dictionary[ key ]
2-
for key, value in dictionary.iteritems():
< do something here with >
Ramit
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
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work phone: 713 - 216 - 5423
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