# 500G一行的超大文本文件，有分隔符{|}def myreadlines(f,newline):    buf=""    while True:        while newline in buf:            pos = buf.index(newline)            yield buf[:pos]            buf = buf[pos+len(newline):]        chunk =f.read(4096*10)        if not chunk:            # 说明已经读到了文件结尾            yield buf            break        buf += chunkwith open("input.txt") as f:    for line in myreadlines(f, "{|}"):        print(line)复制代码