`Union[str, int]` is treated as `dynamic`
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 35/100
Research direction
Start by reproducing the supplied Python snippet with the static compiler and inspect how Union[int, str] annotations are handled before reveal_type(x). Compare that path with the shown control-flow example, where the local type is Union[str, int]. Done means the annotated variable is reported as Union[int, str] rather than dynamic.
Written by the indexing model from the issue text.
Description
What version of Static Python are you using?
6862bbd
2021-10-03
What program did you run?
from typing import Union
x: Union[int, str] = 1
reveal_type(x)
What happened?
The type of x is dynamic
compiler.static.errors.TypedSyntaxError:
reveal_type(x): 'dynamic',
'x' has declared type 'dynamic' and
local type 'Literal[1]'
What should have happened?
We expected the type of x to be Union[int, str] because union types are supported:
x: Any = 1
if True:
x = "hello"
else:
x = 42
reveal_type(x)
# compiler.static.errors.TypedSyntaxError:
# reveal_type(x): 'dynamic',
# 'x' has declared type 'dynamic' and
# local type 'Union[str, int]'
- Dominant language
- Python
- Stars
- 3.8k
- Forks
- 139
- PR merge metrics
- No merged PRs in 30d
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