#500G, 特殊 一行 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) if not chunk: #说明已经读到了文件结尾 yield buf break buf += chunk with open("input.txt") as f: for line in myreadlines(f, "{|}"): print (line)