Às 07:55 de 03/11/22, dn escreveu:
On 03/11/2022 16.24, Paulo da Silva wrote:
class C:
def __init__(self):
self.__foos=5*[0]
@property
def foos(self) -> list[int]:
return self.__foos
@foos.setter
def foos(self,v: int):
self.__foos=[v for __i in self.__foos]
c=C()
c.foos=5
print(c.foos)
_______________________________________
mypy gives the following error:
error: Incompatible types in assignment (expression has type "int",
variable has type "List[int]")
To help us to help you please copy-paste the *exact* message -
especially which line is in-question.
The above code passes without complaint in PyCharm, and executes.
However, the general rule?convention would be to establish type at the
first mention of the identifier, eg
def __init__(self):
self.__foos:list[int] = 5 * [ 0 ]
# or [ 0, 0, 0, 0, 0, ]
Why the "__i", and not "i", or "_"?
Just because of my personal taste.
I know that __ means (for me) a "not used anymore" var and i is an
indexer/counter/...
Regards.
Paulo
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