Is there not an __post__init or some way to initialize a member based on the values of other members?

[metaperl]

The default value example shows numerous ways to initialize a member. But what if you want to initialize it based on the other values of the object being instantiated?

Does Atom have something like dataclass' __post__init()?

[MatthieuDartiailh]

There is nothing like a post_init no, however using a custom _default_* method you can look up the value of other members when building the default value.