CODEWITHSUNDEEP
pythondictionarykey
Cam
Cam

Reputation: 121

How to use a range of keys to index values?

I have a dictionary with keys that are iterable (1-10), and I want to find the values for a range of those keys, like from keys 3-8.

dictionary = {
1: 2.0,
2: 3.5,
3: 1.1,
4: 4.5,
5: 7.8,
6: 9.8,
7: 7.4,
8: 3.2,
9: 10.0,
10: 11.0}

for key,value in dictionary.items():
if key == 1:
    print(value)

This returns 2.0. If I try a range of values:

for key,value in dictionary.items():
    if key == range(3,8):
        print(value)

nothing is returned. Would I have to make an elif statement for each value that I want returned or would it make more sense to 'flip' the keys/values and use a range of values to search for keys instead?

Upvotes: 0

Views: 503

Answers (1)

DeepSpace
DeepSpace

Reputation: 81594

Assuming the range of possible keys is smaller than the number of key-value pairs in the dict, it would be cleaner (and faster) to iterate over the possible keys rather than over the entire dict.

for possible_key in range(3, 8):
    print(dictionary.get(possible_key, 'missing value'))

Upvotes: 1

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