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Diffstat (limited to 'docs/examples/userguide/extension_types/dataclass.pyx')
| -rw-r--r-- | docs/examples/userguide/extension_types/dataclass.pyx | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/docs/examples/userguide/extension_types/dataclass.pyx b/docs/examples/userguide/extension_types/dataclass.pyx new file mode 100644 index 000000000..b03d5f7b1 --- /dev/null +++ b/docs/examples/userguide/extension_types/dataclass.pyx @@ -0,0 +1,21 @@ +cimport cython +try: + import typing + import dataclasses +except ImportError: + pass # The modules don't actually have to exists for Cython to use them as annotations + + +@cython.dataclasses.dataclass +cdef class MyDataclass: + # fields can be declared using annotations + a: cython.int = 0 + b: double = cython.dataclasses.field(default_factory = lambda: 10, repr=False) + + # fields can also be declared using `cdef`: + cdef str c + c = "hello" # assignment of default value on a separate line + + # typing.InitVar and typing.ClassVar also work + d: dataclasses.InitVar[cython.double] = 5 + e: typing.ClassVar[list] = [] |