Check out new functionality of web3py for namedtuple support

[fubuloubu]

ethereum/web3.py#2799

[linear]

APE-1655 Check out new functionality of web3py for namedtuple support

[antazoey]

One thing I don't like about namedtuples:

>>> Struct = namedtuple("MoneySpent", ["a", "_b"])
ValueError: Field names cannot start with an underscore: '_b'

Would this be an issue?

[antazoey]

Here is what it looks like on the web3 type:

>>> mytup = abi_decoded_namedtuple_factory(["foo", "_bar", "baz"])
>>> mytup.foo
_tuplegetter(0, 'Alias for field number 0')
>>> mytup._bar
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: type object 'ABIDecodedNamedTuple' has no attribute '_bar'
>>> mytup.baz
_tuplegetter(2, 'Alias for field number 2')

Underscore no longer causes errors but it also doesn't work!

Edit: I made an issue for this: ethereum/web3.py#3429

I consider this a blocker!