Currently, "A better approach is to use from __future__ import annotations, which is available in Python 3.7 and will become the default in Python 4" is stated in the book.
Currently, pep-563 says, "In Python 3.10 this will become the default behavior. Use of annotations incompatible with this PEP is no longer supported". I think it used to say "Python 4" because Guido didn't like double-digit version numbers (?). Seems like that's changed however. The book should be updated to say "Python 3.10" instead of "Python 4".
bslatkin
commented
3 years ago
Currently, "A better approach is to use from
__future__import annotations, which is available in Python 3.7 and will become the default in Python 4" is stated in the book.Currently, pep-563 says, "In Python 3.10 this will become the default behavior. Use of annotations incompatible with this PEP is no longer supported". I think it used to say "Python 4" because Guido didn't like double-digit version numbers (?). Seems like that's changed however. The book should be updated to say "Python 3.10" instead of "Python 4".