第一个小程序：天气查询

fitz_wang

根据前辈们爬天气的代码加上GUI页面，目前有个问题就是运行一次只能查询一次，再次查询需要重新运行，有没有大佬帮忙优化一下


import tkinter
import requests
import pypinyin
from bs4 import BeautifulSoup
from tkinter import messagebox
def inp():
    city = ''
    chengshi = en1.get()
    chengshi =chengshi.strip()
    if chengshi == '':
        messagebox.showinfo("温馨提示", "城市不能为空")
    else:
        for each in chengshi:
            city = city + pypinyin.pinyin(each, style=pypinyin.NORMAL)[0][0]
    return city,chengshi
def get(city, cityname_zh):
    url = "https://www.tianqi.com/"+ city +"/"
    headers = {
        'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.36'
        }
    res = requests.get(url, headers=headers).text
    soup = BeautifulSoup(res, 'html.parser')
    du = soup.find("p", class_="now")
    shidu_atart = soup.find("dd", class_="shidu")
    tianqi = soup.find("dd", class_="weather")
    shidu = shidu_atart.find_all("b")
    text = str(cityname_zh+"市天气预报\n---------------------"+"\n天气："+tianqi.span.b.text+"\n"+"温度："+du.b.text+"摄氏度"+"\n"+shidu[0].text+"\n"+shidu[1].text+"\n"+shidu[2].text)
    la2 = tkinter.Label(root, width=200, height=300, background="#FFFFFF", borderwidth=2, text=text)
    la2.pack()
def run():
    c, y = inp()
    get(city=c, cityname_zh=y)
root = tkinter.Tk()
root.geometry("400x500")
root.title("天气查询")
la1 = tkinter.Label(root, text="请输入城市")
la1.pack()
en1 = tkinter.Entry(root)
en1.pack()
ba = tkinter.Button(root, text="查询", command=run)
ba.pack()
root.mainloop()