void do_print_csrc(const print_csrc & c, unsigned level) const;
void do_print_python(const print_python & c, unsigned level) const;
void do_print_python_repr(const print_python_repr & c, unsigned level) const;
void do_print_csrc(const print_csrc & c, unsigned level) const;
void do_print_python(const print_python & c, unsigned level) const;
void do_print_python_repr(const print_python_repr & c, unsigned level) const;