import time #换行进度条 print("开始执行".center(20,"=")) scale = 10 for i in range(scale): a = (i/scale)*100 b = i*"*" c = (scale-i)*"*" print("{:>3.0f}%[{}->{}]".format(a,b,c)) time.sleep(0.1) print("{:=^20}".format("结束执行")) #不换行进度条,单行刷新功能的完成，第一，不换行(使用"end=''")，第二，光标回到行首（使用"\r"）,第三，加入计时功能 print("开始执行".center(20,"=")) scale = 10 start = time.perf_counter() for i in range(scale+1): a = (i/scale)*100 b = i*"*" c = (scale-i)*"*" dur = time.perf_counter() - start print("\r{:>3.0f}%[{}->{}] {:.2f}s".format(a,b,c, dur),end="") time.sleep(0.1) print("\n{:=^20}".format("结束执行"))