QTextStream operator "<<" ignores everything but numbers

from PySide2.QtCore import *
from PySide2.QtGui import *
from PySide2.QtWidgets import *

def f():
    file = QFile("out.txt")
    if not file.open(QIODevice.WriteOnly | QIODevice.Text):
        return
    out = QTextStream(file)
    out << "The magic number is: " << 49 << "huh" << 123 << "\n"

if __name__ == "__main__":
    f()