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Added Type Annotation Error Message Indexing/Foreach (#530)

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Alek Petuskey 2023-02-12 21:47:21 -08:00 committed by GitHub
parent 6553be524f
commit adf5b7fb1b
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2 changed files with 11 additions and 0 deletions
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7
pynecone/components/layout/foreach.py
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@ -28,11 +28,18 @@ class Foreach(Component):
Returns: Returns:
The foreach component. The foreach component.
Raises:
TypeError: If the iterable is of type Any.
""" """
try: try:
type_ = iterable.type_.__args__[0] type_ = iterable.type_.__args__[0]
except Exception: except Exception:
type_ = Any type_ = Any
if iterable.type_ == Any:
raise TypeError(
f"Could not foreach over var of type Any. (If you are trying to foreach over a state var, add a type annotation to the var.)"
)
arg = BaseVar(name="_", type_=type_, is_local=True) arg = BaseVar(name="_", type_=type_, is_local=True)
return cls( return cls(
iterable=iterable, iterable=iterable,

4
pynecone/var.py
View File

@ -149,6 +149,10 @@ class Var(ABC):
utils._issubclass(self.type_, Union[List, Dict]) utils._issubclass(self.type_, Union[List, Dict])
or utils.is_dataframe(self.type_) or utils.is_dataframe(self.type_)
): ):
if self.type_ == Any:
raise TypeError(
f"Could not index into var of type Any. (If you are trying to index into a state var, add a type annotation to the var.)"
)
raise TypeError( raise TypeError(
f"Var {self.name} of type {self.type_} does not support indexing." f"Var {self.name} of type {self.type_} does not support indexing."
) )