首先,我们使用 Tkinter
库使我们的脚本可以图形化显示。
使用 requests
库从 丁香园 获取数据。
然后我们将在这种情况下显示我们需要的数据 “当前确诊人数”,“总确诊人数”。
需求和安装
ssh客户端为:MobaXterm,因为它支持X11-Forwarding
系统:Centos8 Minimal
Python版本:Python3.6.8
需要用到的库:requests
, json
, tkinter
, time
下面来安装xorg,用来在远程终端中打开图形化界面,安装python3-tkinter来创建GUI界面:
[root@localhost data]# yum -y install xorg-x11-xauth xorg-x11-utils python3-tkinter
上脚本
下面创建python脚本:
[root@localhost data]# touch gui.py
[root@localhost data]# chmod +x gui.py
[root@localhost data]# vim gui.py
#!/usr/bin/python3
# 导入time, requests, json, tkinter库
import time
import requests
import json
from tkinter import *
# 创建一个窗口
window = Tk()
# 窗口标题为“Covid-19”
window.title("Covid-19")
# 窗口大小为600px * 130px
window.geometry('600x130')
# 创建label 1,并创建初始信息
lbl = Label(window, text = "The number of confirmed cases in China: ....")
# label窗格占用第1列,第1行,靠左对齐。
lbl.grid(column = 1, row = 0, sticky = W)
# 创建label 2,并创建初始信息
lbl1 = Label(window, text = "Cumulative number of confirmed cases in China: ....")
lbl1.grid(column = 1, row = 1, sticky = W)
# 创建label 3,并创建初始信息,用来显示时间的。
lbl2 = Label(window, text = "Data update time: ....")
lbl2.grid(column = 1, row = 3, sticky = W)
# 创建label 4,并创建初始信息,用来显示是否刷新。
lbl3 = Label(window, fg = 'green', text = "")
lbl3.grid(column = 1, row = 4, sticky = W)
# 定义一个点击事件
def clicked():
# 制定API接口的地址
url = "https://lab.isaaclin.cn/nCoV/api/overall"
# 获取url地址
page = requests.get(url)
# 将json数据载入内存
data = json.loads(page.text)
#下面4个变量用来将API中的时间戳转化为时间。
tm = data["results"][0]["updateTime"]
timeStamp = float(tm/1000)
timeArray = time.localtime(timeStamp)
updatetime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)
# 当点击时,获取 currentConfirmedCount 的值,因为text里面只能用str字符串,所以需要将证书类型的数字转化为字符串。
lbl.configure(text ="The number of confirmed cases in China: " + "%s" %(data["results"][0]["currentConfirmedCount"]))
lbl1.configure(text ="Cumulative number of confirmed cases in China: " + "%s" %(data["results"][0]["confirmedCount"]))
lbl2.configure(text ="Data update time: " + updatetime)
lbl3.configure(text ="State: Refresh")
# 创建一个按钮,用来刷新数据。
btn = Button(window, text ="Refresh", command = clicked)
# 按钮的位置在第2列,第5行。
btn.grid(column = 2, row = 5)
# 显示窗口
window.mainloop()
解释:
-
sticky =
对齐方式的值有四个,N, S, W, E,代表着东西南北、上下左右。
执行脚本,输出如下内容:
[root@localhost data]# ./gui.py
点击Refresh之后,会看到获取的数据啦。
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