Function print

include/pybind11/pybind11.h:3670–3700

PYBIND11_NAMESPACE_BEGIN(detail)
PYBIND11_NOINLINE void print(const tuple &args, const dict &kwargs) {
    auto strings = tuple(args.size());
    for (size_t i = 0; i < args.size(); ++i) {
        strings[i] = str(args[i]);
    }
    auto sep = kwargs.contains("sep") ? kwargs["sep"] : str(" ");
    auto line = sep.attr("join")(std::move(strings));

    object file;
    if (kwargs.contains("file")) {
        file = kwargs["file"].cast<object>();
    } else {
        try {
            file = module_::import("sys").attr("stdout");
        } catch (const error_already_set &) {
            /* If print() is called from code that is executed as
               part of garbage collection during interpreter shutdown,
               importing 'sys' can fail. Give up rather than crashing the
               interpreter in this case. */
            return;
        }
    }

    auto write = file.attr("write");
    write(std::move(line));
    write(kwargs.contains("end") ? kwargs["end"] : str("\n"));

    if (kwargs.contains("flush") && kwargs["flush"].cast<bool>()) {
        file.attr("flush")();
    }
}
PYBIND11_NAMESPACE_END(detail)

template <return_value_policy policy = return_value_policy::automatic_reference, typename... Args>