做一个一分钟倒计时的秒表，思路是这样的，从60开始，每隔0.1秒倒数一个数，那么60个0.1秒就正好是一分钟，这里我们要用到time库的sleep方法，所以要先引入time库，代码如下：
一分钟倒计时
import time
itime=60
while itime>=0:
print("\r{:2}".format(itime), end="")
itime=itime-1
time.sleep(0.1)
运行结果动态图
<tt-image data-tteditor-tag="tteditorTag" contenteditable="false" class="syl1555138452607 ql-align-center" data-render-status="finished" data-syl-blot="image" style="box-sizing: border-box; cursor: text; text-align: left; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; display: block;">
image
<input class="pgc-img-caption-ipt" placeholder="图片描述(最多50字)" value="" style="box-sizing: border-box; outline: 0px; color: rgb(102, 102, 102); position: absolute; left: 187.5px; transform: translateX(-50%); padding: 6px 7px; max-width: 100%; width: 375px; text-align: center; cursor: text; font-size: 12px; line-height: 1.5; background-color: rgb(255, 255, 255); background-image: none; border: 0px solid rgb(217, 217, 217); border-radius: 4px; transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;"></tt-image>
接下来我们把上述源代码做一个调整，把输出的60个整数，改成我们班同学的学号，这个学号我们用random来随机生成，只需给出起始学号和中杰学号就可以了，60秒的时间倒计时里，系统会随机生成学生的学号，最后停留的那个号码就是我们想要的幸运号码。代码如下：
谁最幸运，随机找出你的学号
import time
import random
itime=60
while itime>=0:
print("\r幸运号码就是你:1820040{:2}".format(random.randint(3101,3136)), end="")
itime=itime-1
time.sleep(0.01)
运行结果动态图
<tt-image data-tteditor-tag="tteditorTag" contenteditable="false" class="syl1555138452613 ql-align-center" data-render-status="finished" data-syl-blot="image" style="box-sizing: border-box; cursor: text; text-align: left; color: rgb(34, 34, 34); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: pre-wrap; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial; display: block;">
image
<input class="pgc-img-caption-ipt" placeholder="图片描述(最多50字)" value="" style="box-sizing: border-box; outline: 0px; color: rgb(102, 102, 102); position: absolute; left: 187.5px; transform: translateX(-50%); padding: 6px 7px; max-width: 100%; width: 375px; text-align: center; cursor: text; font-size: 12px; line-height: 1.5; background-color: rgb(255, 255, 255); background-image: none; border: 0px solid rgb(217, 217, 217); border-radius: 4px; transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;"></tt-image>
Python学习群：683380553，有大牛答疑，有资源共享！有想学习python编程的，或是转行，或是大学生，还有工作中想提升自己能力的，正在学习的小伙伴欢迎加入学习。
网友评论