I'm playing with replacing our

native.py

Externs.create_exception()

method with instead using CPython's

eval(code: &str)

mechanism, which will reduce FFI boilerplate. But I'm stuck on escaping of quotes. I'm writing

py.eval(&format!("Exception(\"{}\")", msg)

, and it results in a syntax error if

msg

has

"

in it. We need to modify

msg

so that

"

is transformed into

\"

. I'm not finding a good way to do this in Rust - the best I've thought of is to map over

.chars()

and create a new

String

?

Why not just use

PyErr

? https://docs.rs/cpython/0.5.2/cpython/struct.PyErr.html

We need the wrapping

Exception()

for the sake of generating a string But the above problem is solved by using

PyModule.call()

instead of

eval()

. Yay!