All Questions
Tagged with namedtuple mypy
10
questions
3
votes
1
answer
415
views
Why does mypy fail to detect that a raw tuple value is a NamedTuple?
I have this piece of code:
from typing import NamedTuple
class KeyTuple(NamedTuple):
key: str
storage: dict[KeyTuple, int] = {}
storage.get(("kek",))
that raises an error:
test_mypy....
- 61
0
votes
1
answer
231
views
Mypy does not detect errors regarding the use of NamedTuple inside functions
In the following code the defintions of x2 and x3 are obviously wrong, yet mypy does not complain.
from typing import NamedTuple
class X(NamedTuple):
a: float
b: float
c: float
def foo():...
- 535
0
votes
0
answers
515
views
NamedTuple indexing not supported by mypy?
I define a NamedTuple as follow to get data scraped from a webpage (grades from a restaurant rating website):
class Grades(NamedTuple):
Value: Optional[int] = None
Price: Optional[int] = None
...
- 1,241
1
vote
1
answer
584
views
typechecking python NamedTuple in both python 2 and 3
I have a Python code that works with both python2 and python3 and uses mypy.
I managed to have my namedtuples typechecked with the following really convoluted method:
try:
from typing import ...
- 9,672
2
votes
2
answers
1k
views
How both ignore type check and obey line <80 chars
I have this data type that just groups related data. It should be a struct-like thing, so I opted for a namedtuple.
ConfigOption = namedtuple('ConfigOption', 'one two animal vehicle fairytale')
On ...
- 41.3k
52
votes
6
answers
29k
views
What are the main differences of NamedTuple and TypedDict in Python / mypy
It seems to me that NamedTuple and TypedDict are fairly similar and the Python developers themselves recognized that.
Concerning the PEP, I would rather add a common section about NamedTuple and ...
- 27.5k
1
vote
1
answer
1k
views
How to ignore mypy errors when using NamedTuples with default values
I have been able to have mypy do a type check on NamedTuple and use default values for NamedTuple.
However, I always have an error raised by mypy when I use default value.
Here is my code (I use ...
- 12.6k
1
vote
0
answers
880
views
typing.NamedTuple, abc.NamedTuple mixins in python 3.6.2?
I am new to python (3.6.2 is the version I am using).
I am currently porting (trying to port) a DSL implementation from Scala to python for some projet in which python is imposed.
So I am looking ...
- 566
34
votes
2
answers
13k
views
A way to subclass NamedTuple for purposes of typechecking
I have several namedtuples that share some fields. I have a function that accepts these tuples and is guaranteed to only interact with the shared fields. I want to typecheck such code in mypy.
An ...
- 531
1
vote
1
answer
1k
views
How do you implement type-checking on methods for classes that inherit from NamedTuple in mypy?
According to the mypy docs, if a class needs to reference itself, it can use a forward-reference.
This seems to work fine for normal classes but I'm having trouble getting it to work with classes that ...
