Am Sat, Jan 13, 2024 at 09:20:00PM +0100 schrieb Karsten Hilbert via
Python-list:
> > I was wondering if
> > your type hint for queries shouldn't be the following.
> >
> > queries:list[dict[str,str]|dict[str,list]|dict[str,dict[str, dict[str,
> > Ant]]]
Wait, not really. Let me give an example.
Am Fri, Jan 12, 2024 at 02:23:43PM +0100 schrieb Antoon Pardon via Python-list:
> > queries:list[dict[str, str | list | dict[str, Any]]]=None,
> >
> >into
> >
> > "List[Dict[str, Union[str, List[Any], Dict[str, Any"
> >
> >seems accurate. I just don't understand why list[dict[str,
> >s
Op 29/12/2023 om 16:02 schreef Karsten Hilbert via Python-list:
Am Fri, Dec 29, 2023 at 07:49:17AM -0700 schrieb Mats Wichmann via Python-list:
I am not sure why mypy thinks this
gmPG2.py:554: error: Argument "queries" to "run_rw_queries" has incompatible type
"List[Dict[str, str]]"; expecte
Thanks to all. I ended up using Sequence for the list part
and Mapping for the dict part, which does require "import
typing" which I would rather have avoided.
Karsten
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On 31/12/23 10:06 am, Thomas Passin wrote:
my suggestion above does
work, *except* that you cannot mix-and-match different DictTypex types
Have you tried declaring the argument as a Mapping instead of a dict?
Seeing as Thomas Passin's Sequence experiment worked, it seems like this
should work t
On 31/12/23 8:05 am, Chris Angelico wrote:
Ah, I think you've hit on the problem there. Consider this:
def add_item(stuff: dict[str: str | int]):
stuff["spam"] = "ham"
stuff["vooom"] = 1_000_000
Yep, that's it exactly. It's not the union itself that's the problem,
but the fact that t
On 12/30/2023 9:14 AM, Thomas Passin via Python-list wrote:
On 12/29/2023 10:02 AM, Karsten Hilbert via Python-list wrote:
I agree that mypy's grasp of my intent from
queries:list[dict[str, str | list | dict[str, Any]]]=None,
into
"List[Dict[str, Union[str, List[Any], Dict[str, Any]]]
On Sun, 31 Dec 2023 at 03:38, Thomas Passin via Python-list
wrote:
> I am not very expert in Python type hints. In working up the example
> program I just posted, I got an error message from mypy that remarked
> that "list" is invariant, and to try Sequence which is "covariant". I
> don't know w
> On 30 Dec 2023, at 15:11, Karsten Hilbert via Python-list
> wrote:
>
> queries = [{'SQL': 'SELECT %(value)s', 'args': {'value': 1}}]
>
> and
>
> run_queries(conn, queries:list[str|dict[str, Any]]):
In cases like this I often use a wrapper class in place of a simple str.
If you have a cla
> I'm fairly sure your database queries don't actually give you strings or
> dicts, right? You probably get lists (or iterators) of tuples and
> somewhere you convert them to the arguments you are feeding to
> run_queries().
Ah, no, those queries are enshrined within the middleware as Python stri
On 12/29/2023 10:02 AM, Karsten Hilbert via Python-list wrote:
Am Fri, Dec 29, 2023 at 07:49:17AM -0700 schrieb Mats Wichmann via Python-list:
I am not sure why mypy thinks this
gmPG2.py:554: error: Argument "queries" to "run_rw_queries" has incompatible type
"List[Dict[str, str]]"; expected
> It occurs to me that you could simplify things if you converted those
> plain query strings to dicts:
>
> 'SELECT 1' --> {'SQL': 'SELECT 1'}
Ha, indeed. There's likely not that many "simple string SQL queries"
in that codebase so I shall take it as an opportunity to refactor them.
So, at least
On 12/30/2023 10:08 AM, Karsten Hilbert via Python-list wrote:
Dear Thomas,
thanks for taking the time to look into my issue.
Maybe it helps if I explain what I want (sorry that my web mailer does not
respect
indentation, I will insert dots).
I want a function to run SQL queries:
run_queries
On 12/30/2023 10:08 AM, Karsten Hilbert via Python-list wrote:
Dear Thomas,
thanks for taking the time to look into my issue.
Maybe it helps if I explain what I want (sorry that my web mailer does not
respect
indentation, I will insert dots).
I want a function to run SQL queries:
run_queries
Dear Thomas,
thanks for taking the time to look into my issue.
Maybe it helps if I explain what I want (sorry that my web mailer does not
respect
indentation, I will insert dots).
I want a function to run SQL queries:
run_queries(conn, queries):
...for q in queries:
..conn.execute(q)
I no
On 12/29/2023 10:02 AM, Karsten Hilbert via Python-list wrote:
I agree that mypy's grasp of my intent from
queries:list[dict[str, str | list | dict[str, Any]]]=None,
into
"List[Dict[str, Union[str, List[Any], Dict[str, Any"
seems accurate. I just don't understand why list[
Hi Greg,
> dict[str, str] is not a subtype of dict[str, str | something_else]
> because you can assign a value of type something_else to the latter
> but not the former.
I understand what you are saying but I do not yet understand why this
applies to my situation.
I don't have Python at hand cur
On 30/12/23 4:02 am, Karsten Hilbert wrote:
def run_rw_queries (
link_obj:_TLnkObj=None,
queries:list[dict[str, str | list | dict[str, Any]]]=None,
Given that I would have thought that passing in
list[dict[str, str]] for "queries" ought to be type safe.
Am Fri, Dec 29, 2023 at 11:04:59AM -0700 schrieb Mats Wichmann via Python-list:
> >For what it's worth here's the signature of that function:
> >
> > def run_rw_queries (
> > link_obj:_TLnkObj=None,
> > queries:list[dict[str, str | list | dict[str, Any]]]=None,
> >
On 12/29/23 08:02, Karsten Hilbert via Python-list wrote:
Dict[str, str] means the key type and value type should both be strings,
Indeed, I know that much, list[dict[str, str]] is what is getting
passed in in this particular invocation of run_rw_queries().
For what it's worth here's the sign
Am Fri, Dec 29, 2023 at 07:49:17AM -0700 schrieb Mats Wichmann via Python-list:
> >I am not sure why mypy thinks this
> >
> >gmPG2.py:554: error: Argument "queries" to "run_rw_queries" has incompatible
> >type "List[Dict[str, str]]"; expected
> >"List[Dict[str, Union[str, List[Any], Dict[str, Any
On 12/29/23 05:15, Karsten Hilbert via Python-list wrote:
Hi all,
I am not sure why mypy thinks this
gmPG2.py:554: error: Argument "queries" to "run_rw_queries" has incompatible type
"List[Dict[str, str]]"; expected
"List[Dict[str, Union[str, List[Any], Dict[str, Any" [arg-type]
Am Fri, Dec 29, 2023 at 01:15:29PM +0100 schrieb Karsten Hilbert via
Python-list:
> I am not sure why mypy thinks this
>
> gmPG2.py:554: error: Argument "queries" to "run_rw_queries" has incompatible
> type "List[Dict[str, str]]"; expected
> "List[Dict[str, Union[str, List[Any], Dict[str, Any]]]
Hi all,
I am not sure why mypy thinks this
gmPG2.py:554: error: Argument "queries" to "run_rw_queries" has incompatible
type "List[Dict[str, str]]"; expected
"List[Dict[str, Union[str, List[Any], Dict[str, Any" [arg-type]
rows, idx = run_rw_queries(link_obj = conn, queri
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