colour.utilities.Lookup

class colour.utilities.Lookup[source]

Extends dict type to provide a lookup by value(s).

keys_from_value()[source]
first_key_from_value()[source]

References

[Mansencalc]

Examples

>>> person = Lookup(first_name='Doe', last_name='John', gender='male')
>>> person.first_key_from_value('Doe')
'first_name'
>>> persons = Lookup(John='Doe', Jane='Doe', Luke='Skywalker')
>>> sorted(persons.keys_from_value('Doe'))
['Jane', 'John']
__init__()

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__ Initialize self.
clear()
copy()
first_key_from_value(value) Gets the first key with given value.
fromkeys Returns a new dict with keys from iterable and values equal to value.
get(k[,d])
items()
keys()
keys_from_value(value) Gets the keys with given value.
pop(k[,d]) If key is not found, d is returned if given, otherwise KeyError is raised
popitem() 2-tuple; but raise KeyError if D is empty.
setdefault(k[,d])
update([E, ]**F) If E is present and has a .keys() method, then does: for k in E: D[k] = E[k] If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v In either case, this is followed by: for k in F: D[k] = F[k]
values()