Miscellaneous functions#

or_get(d: dict, keys: list, default_value=None) → Any#

Returns the value from dict based on first match of candidate keys. or_get is useful when you are not sure exactly how the keys looks like. You pass a list of candidate keys. The first that matches will be returned.

Parameters

ddict
keyslist of candidate keys
default_valuevalue that is returned if no key matches (and default is not None)

Returns

outvalue of d[k]

Raises

KeyError: If any key in keys is not in d and no default_value is given

See also

or_replace: will replace the first key value in keys that exists, with value.

Examples

>>> d = dict((("a", 1), ("b", 2)))
>>> keys = ["1", "a"]
>>> or_get(d, keys)
1

>>> d = dict((("a", 1), ("b", 2)))
>>> keys = ["b", "a"]
>>> or_get(d, keys)
2

>>> d = dict((("a", 1), ("b", 2)))
>>> keys = [1]
>>> default_value = 0
>>> or_get(d, keys, default_value)
0

or_replace(d: dict, keys: list, value: Any)#

or_replace will replace the first key value in keys that exists, with value.

Parameters

ddict
keyslist: candidate keys
valuevalue that is set

Returns

outd: Updated dict

Raises

KeyError: If no keys are given

See also

or_get: Returns the value from dict based on first match of candidate keys.

Examples

>>> d = dict((("a", 1), ("b", 2)))
>>> keys = ["1", "a"]
>>> value = "1"
>>> or_replace(d, keys, value)
{'a': '1', 'b': 2}

>>> d = dict((("a", 1), ("b", 2)))
>>> keys = ["b", "a"]
>>> value = "1"
>>> or_replace(d, keys, value)
{'a': 1, 'b': '1'}

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