Could you please tell me what is wrong with this code?
from multimethod import multimethod
from typing import Iterable
@multimethod
def foo(x: Iterable[Iterable]):
print(x)
@multimethod
def foo(x):
print(x)
foo([range(1), range(2)])
The error I get is:
TypeError: type 'range' is not an acceptable base type
Interestingly, these snippets do work:
from multimethod import multimethod
@multimethod
def foo(x):
print(x)
foo([range(1), range(2)])
or
from multimethod import multimethod
from typing import Iterable
@multimethod
def foo(x: Iterable):
print(x)
@multimethod
def foo(x):
print(x)
foo([range(1), range(2)])
As a little bit of context, what I am trying to do is build a hierarchy and dispatch different functions depending on what types an Iterable holds:
from multimethod import multimethod
from typing import Generator, Iterable
import string
def gen(stop):
i = 0
for c in string.ascii_lowercase:
if i < stop:
i += 1
yield c
@multimethod
def bar(x: Iterable[range]):
print('bar(x: Iterable[range]')
@multimethod
def bar(x: Iterable[Generator]):
print('bar(x: Generator)')
@multimethod
def bar(x: Iterable[Iterable]):
print('bar(x: Iterable)')
#bar([range(1), range(2)])
bar([gen(2), gen(3)])
bar([[0, 1, 2], [0, 1, 2, 3]])
