Method py_pad

crates/vm/src/anystr.rs:280–288

(&self, left: usize, right: usize, fillchar: Self::Char)

    }

    fn py_pad(&self, left: usize, right: usize, fillchar: Self::Char) -> Self::Container {
        let mut u = Self::Container::with_capacity(
            (left + right) * fillchar.bytes_len() + self.bytes_len(),
        );
        u.extend(core::iter::repeat_n(fillchar, left));
        u.push_str(self);
        u.extend(core::iter::repeat_n(fillchar, right));
        u
    }

    fn py_center(&self, width: usize, fillchar: Self::Char, len: usize) -> Self::Container {
        let marg = width - len;