tri.named_struct
tri.named_struct supplies classes that can be used like dictionaries, but with a predefined set of possible key values.
Example
from tri_named_struct import NamedStruct
class MyNamedStruct(NamedStruct):
foo = NamedStructField()
bar = NamedStructField()
m = MyNamedStruct(17, 42)
assert m['foo'] == 17
assert m.foo == 17
assert m == dict(foo=17, bar=42)
m.not_foo # Will raise an AttributeErrorDefault values can be provided:
from tri_named_struct import NamedStruct
class MyNamedStruct(NamedStruct):
foo = NamedStructField()
bar = NamedStructField()
baz = NamedStructField(default='default')
assert MyNamedStruct(17) == dict(foo=17, bar=None, baz='default')Default values can alternatively be provided by a factory method:
from tri_named_struct import NamedStruct
class MyNamedStruct(NamedStruct):
foo = NamedStructField(default_factory=list)
assert MyNamedStruct().foo == []There is also a functional way to defined a NamedStruct subclass:
from tri_named_struct import named_struct
MyNamedStruct = named_struct('foo, bar')
m = MyNamedStruct(17, 42)
assert m.foo == 17
assert m.bar == 42Running tests
You need tox installed then just make test.
License
BSD
Documentation
Changelog
1.2.0 (2020-04-24)
Upped dependency tri.declarative to 5.x
1.1.0 (2019-10-15)
Upped dependency tri.declarative to 4.x
1.0.0 (2019-06-10)
Renamed package from tri.named_struct to tri_named_struct
Dropped python2 support
0.12.0 (2016-08-30)
Fix class level override of named struct fields.
0.11.0 (2016-05-06)
Fix default values shadowing values set explicitly in subclass __init__ method.
0.10.0 (2016-01-12)
Added default_factory argument to specify default values via a callback.
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