Question

I know there is no frozen dict data type but If there was one how would it be different from namedtuple. It seems to me that namedtuple performs the required operations but obviously it does not. So what are the differences?

Answer 1

From an API viewpoint, probably not much, though:

• namedtuple keys are always strings with some limitations:

Any valid Python identifier may be used for a fieldname except for
names starting with an underscore. Valid identifiers consist of
letters, digits, and underscores but do not start with a digit or
underscore and cannot be a keyword such as class, for, return, global,
pass, or raise.

• namedtuples can always be accessed as regular tuples.

Internally they are very different:

Named tuple instances do not have per-instance dictionaries, so they
are lightweight and require no more memory than regular tuples.