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Exception Example Triggers Host Panic in extism-py 0.1.4 #52

@bradyjoslin

Description

@bradyjoslin

I'm encountering a panic when running the example from the readme using version 0.1.4.

Running the documented example:

import extism

@extism.plugin_fn
def greet():
  name = extism.input_str()
  if name == "Benjamin":
    raise Exception("Sorry, we don't greet Benjamins!")
  extism.output_str(f"Hello, {name}")

...results in a panic when called from the host:

$ extism call plugin.wasm greet --input="Benjamin" --wasi
thread '<unnamed>' panicked at src/lib.rs:58:6:
called `Result::unwrap()` on an `Err` value: PyErr { type: <class 'Exception'>, value: Exception("Sorry, we don't greet Benjamins!"), traceback: Some(<traceback object at...
...

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