26 lines
604 B
Markdown
26 lines
604 B
Markdown
---
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title: map_values
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tags: object,function,intermediate
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---
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Creates an object with the same keys as the provided object and values generated by running the provided function for each value.
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Use `dict.keys()` to iterate over the object's keys, assigning the values produced by `fn` to each key of a new object.
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```py
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def map_values(obj, fn):
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ret = {}
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for key in obj.keys():
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ret[key] = fn(obj[key])
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return ret
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```
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```py
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users = {
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'fred': { 'user': 'fred', 'age': 40 },
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'pebbles': { 'user': 'pebbles', 'age': 1 }
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}
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map_values(users, lambda u : u['age']) # {'fred': 40, 'pebbles': 1}
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```
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