I have
listOfElements = ["O", "C", "H", "H", "N", "O", "H"]
What's the best way to turn this into this dictionary-
dicOfElements = {"O":2, "C":1, "H":3, "N":1}
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blackbrandt
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jkally
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2see https://stackoverflow.com/questions/3496518/python-using-a-dictionary-to-count-the-items-in-a-list – depperm Jul 08 '19 at 18:33
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3collections.Counter – Patrick Artner Jul 08 '19 at 18:34
1 Answers
2
Use collections.Counter:
from collections import Counter
listOfElements = ["O", "C", "H", "H", "N", "O", "H"]
c = Counter(listOfElements)
dict(c)
# {'C': 1, 'H': 3, 'N': 1, 'O': 2}
Lante Dellarovere
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