26 lines
792 B
Markdown
26 lines
792 B
Markdown
---
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title: Sort dictionary by key
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tags: dictionary
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cover: laptop-plants
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firstSeen: 2020-10-16T21:24:33+03:00
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lastUpdated: 2020-11-02T19:28:35+02:00
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---
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Sorts the given dictionary by key.
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- Use `dict.items()` to get a list of tuple pairs from `d` and sort it using `sorted()`.
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- Use `dict()` to convert the sorted list back to a dictionary.
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- Use the `reverse` parameter in `sorted()` to sort the dictionary in reverse order, based on the second argument.
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```py
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def sort_dict_by_key(d, reverse = False):
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return dict(sorted(d.items(), reverse = reverse))
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```
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```py
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d = {'one': 1, 'three': 3, 'five': 5, 'two': 2, 'four': 4}
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sort_dict_by_key(d) # {'five': 5, 'four': 4, 'one': 1, 'three': 3, 'two': 2}
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sort_dict_by_key(d, True)
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# {'two': 2, 'three': 3, 'one': 1, 'four': 4, 'five': 5}
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```
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