tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
elif response.status_code in (429, 503):
，更多细节参见同城约会
Жители Санкт-Петербурга устроили «крысогон»17:52
В России ответили на имитирующие высадку на Украине учения НАТО18:04