Algebraic Data Types in Python
Project description
Algebraic Data Types in Python
import adt
class MyADT(adt.ADT):
foo: ()
bar: (int,)
baz: (int, bool, str, None)
@adt.fieldmethod
def double_first(field, basecls) -> "MyADT":
if isinstance(field, basecls.foo):
raise TypeError(
f"{basecls.foo.__qualname__} does not support doubling"
)
field_type = type(field)
first, *rem = field
return field_type(first * 2, *rem)
foo = MyADT.foo()
bar = MyADT.bar(4)
baz = MyADT.baz(3, False, "hi", None)
for val in [foo, bar, baz]:
print(val)
try:
doubled = val.double_first()
print("Doubled:", doubled)
except TypeError:
print("Failed to double")
print()
See examples/
, adt/example.py
and tests/test.py
.
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
adt-0.0.2.tar.gz
(8.5 kB
view details)
Built Distribution
adt-0.0.2-py3-none-any.whl
(5.0 kB
view details)
File details
Details for the file adt-0.0.2.tar.gz
.
File metadata
- Download URL: adt-0.0.2.tar.gz
- Upload date:
- Size: 8.5 kB
- Tags: Source
- Uploaded using Trusted Publishing? No
- Uploaded via: uv/0.6.1
File hashes
Algorithm | Hash digest | |
---|---|---|
SHA256 | be7c3fd319affeae73080d6b3b6b09df6e342612ca0a525ed7cf924dd05f7004 |
|
MD5 | 39db36b72937c7e3f4df86b5f5dfaa2a |
|
BLAKE2b-256 | 0c9273c650f270f8f2d0f84aa95e35fb0e14a4f25fa987d00b8c1cb6fd856437 |
File details
Details for the file adt-0.0.2-py3-none-any.whl
.
File metadata
- Download URL: adt-0.0.2-py3-none-any.whl
- Upload date:
- Size: 5.0 kB
- Tags: Python 3
- Uploaded using Trusted Publishing? No
- Uploaded via: uv/0.6.1
File hashes
Algorithm | Hash digest | |
---|---|---|
SHA256 | 9c36d5a1004dec40a2964b944d9cd5d4088742f13a4c0c06075a47c05a46802e |
|
MD5 | fb762f4b15e7c166b135b6e2d88b8ed5 |
|
BLAKE2b-256 | 50e07ea4c68d9379da8d39fb85018eae13795bd74a3fbc0bfb0521e46fab3523 |