On Sun, Apr 19, 2020 at 11:40 PM Steven D'Aprano <st...@pearwood.info>
wrote:
def M(*vals):
# ... magic stuff ...
return dct
> py> alpha = 'something'
> py> M(alpha)
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "<stdin>", line 5, in M
> TypeError: 'NoneType' object is not subscriptable
>
Yep. It works in IPython and it works in a script, but I didn't try the
plain Python shell. I'm using Python 3.8, but I imagine the same problem
exists between IPython and Python shell in other versions.
etc, and how many hours of debugging it will take to get it to work.
>
Some positive but finite number of hours to deal with the edge cases. For
the discussion, can we just stipulate some future L() that is a better
version of M()?
(base) 551-bin % python auto-dict.py
{'alpha': 'something'}
args: ()
kws: {'alpha': 'something', 'beta': 'else', 'gamma': 'again'}
(base) 552-bin % cat auto-dict.py
from magic import M
alpha = 'something'
beta = 'else'
gamma = 'again'
print(M(alpha))
def show(*args, **kws):
print('args:', args)
print('kws:', kws)
show(**M(alpha, beta, gamma))
> I'm also looking at that call to eval and wondering if someone smarter
> than me can use that to trick me into evaluating something I don't like.
>
Yes... in L() is should be `ast.literal_eval()`.
Maybe I'll write a better L() in the next day or two. But I really AM NOT
pushing for anyone to use such a thing, just to consider the conceptual
space it occupies vs. having new syntax.
--
Keeping medicines from the bloodstreams of the sick; food
from the bellies of the hungry; books from the hands of the
uneducated; technology from the underdeveloped; and putting
advocates of freedom in prisons. Intellectual property is
to the 21st century what the slave trade was to the 16th.
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