in bindings/python/src/lib.rs [874:880]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "[")?;
for (i, item) in self.0.iter().enumerate() {
write!(f, "{prefix}{item}", prefix = if i == 0 { "" } else { ", " })?;
}
write!(f, "]")
}