Re: typing: property/setter and lists? [RESOLVED ERRATA]
Às 07:52 de 04/11/22, dn escreveu: On 04/11/2022 07.50, Chris Angelico wrote: On Fri, 4 Nov 2022 at 05:48, Paulo da Silva wrote: Às 05:32 de 03/11/22, Paulo da Silva escreveu: Às 03:24 de 03/11/22, Paulo da Silva escreveu: Hi! And a typing problem again!!! ___ 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]") How do I turn around this? Changing def foos(self) -> list[int]: to def foos(self) -> Union[list[int]]: I meant, of course, def foos(self) -> Union[list[int],int]: Ohhh! I thought this was triggering a strange quirk of the checker in some way... Yes, these personal styles (?quirks) are off-putting to others. Plus "_" means (more or less) "not used anymore" and for most of us, a weak-identifier name such as "i" is indeed "an indexer/counter/... " Thank you for the suggestions. BTW, I am not a python pro programmer. I use it as a tool as many other tools and some other (few) languages. .. ...and whilst I'm griping, "To help us to help you please copy-paste the *exact* message" has been followed by: "I'm sorry. A bad transposition of the text." copy-paste for the win! (and to keep others happy to spend their voluntary time helping you - more working-with-the-team thinking to consider - please) The full original message was there. Seemed to me that that was obvious considering the simplicity of the subject and the illustrative toy example. Anyway, I'm sorry. Thank you. Paulo -- https://mail.python.org/mailman/listinfo/python-list
Re: typing: property/setter and lists? [RESOLVED ERRATA]
On 04/11/2022 07.50, Chris Angelico wrote: On Fri, 4 Nov 2022 at 05:48, Paulo da Silva wrote: Às 05:32 de 03/11/22, Paulo da Silva escreveu: Às 03:24 de 03/11/22, Paulo da Silva escreveu: Hi! And a typing problem again!!! ___ 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]") How do I turn around this? Changing def foos(self) -> list[int]: to def foos(self) -> Union[list[int]]: I meant, of course, def foos(self) -> Union[list[int],int]: Ohhh! I thought this was triggering a strange quirk of the checker in some way... Yes, these personal styles (?quirks) are off-putting to others. Plus "_" means (more or less) "not used anymore" and for most of us, a weak-identifier name such as "i" is indeed "an indexer/counter/... " Accordingly, the question becomes: why not follow the crowd - unless you tell me that this is a team/company convention? ...and whilst I'm griping, "To help us to help you please copy-paste the *exact* message" has been followed by: "I'm sorry. A bad transposition of the text." copy-paste for the win! (and to keep others happy to spend their voluntary time helping you - more working-with-the-team thinking to consider - please) -- Regards, =dn -- https://mail.python.org/mailman/listinfo/python-list
Re: typing: property/setter and lists? [RESOLVED ERRATA]
On Fri, 4 Nov 2022 at 05:48, Paulo da Silva wrote: > > Às 05:32 de 03/11/22, Paulo da Silva escreveu: > > Às 03:24 de 03/11/22, Paulo da Silva escreveu: > >> Hi! > >> > >> And a typing problem again!!! > >> ___ > >> 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]") > >> > >> How do I turn around this? > >> > > Changing def foos(self) -> list[int]: to > > def foos(self) -> Union[list[int]]: > I meant, of course, > def foos(self) -> Union[list[int],int]: > Ohhh! I thought this was triggering a strange quirk of the checker in some way... ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: typing: property/setter and lists? [RESOLVED ERRATA]
Às 05:32 de 03/11/22, Paulo da Silva escreveu: Às 03:24 de 03/11/22, Paulo da Silva escreveu: Hi! And a typing problem again!!! ___ 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]") How do I turn around this? Changing def foos(self) -> list[int]: to def foos(self) -> Union[list[int]]: I meant, of course, def foos(self) -> Union[list[int],int]: Sorry. Paulo -- https://mail.python.org/mailman/listinfo/python-list
