This prints the text from 1% to 100%, all on the same line since it uses stdout.write rather than print. However, before printing each percentage it first prints \u001b[1000D, which means "move cursor left by 1000 characters). This should move it all the way to the left of the screen, thus letting the new percentage that gets printed over-write the old one. Hence we see the loading percentage seamlessly changing from 1% to 100% before the function returns:
До этого КСИР сообщил о нанесении удара возмездия за атаку на начальную школу для девочек в Минабе, жертвами которой стали более ста учениц.
。电影是该领域的重要参考
"I have had conversations with people where they're like 'manufacturing doesn't really exist in this country anymore'," she said.
Anybody who actually owned a '90s PC will tell you the inside was a mess of cables, with the main offenders being the HDD and FDD ribbon cables. There is a way nowadays to make the inside pretty by using "round cables".
——杨英委员（广西双英集团股份有限公司董事长）