Python Tkinter Treeview的使用

import requests
from bs4 import BeautifulSoup
import threading
import time
#from tkinter import *
import tkinter as tk
from tkinter import ttk
import pandas as pd

def get_lst(pram = "xxxxxxx"): 
    url="https://xxxxxx"+pram
    # 请求腾讯新闻的URL，获取其text文本
    wbdata = requests.get(url).text
    # 对获取到的文本进行解析
    soup = BeautifulSoup(wbdata,'html.parser')
    # 从解析文件中通过select选择器定位指定的元素，返回一个列表
    #%%
    page_n=int(soup.select("#pagination-ul > li.pagin-li")[-1].get_text().strip())#.pagin-li .pagin-li-last
    #%%
    lst_tmp=[]
    id_item=0
    print("+++++++++第{0}页的内容+++++++++".format(1))
    for _p in range(page_n):
        if _p>0:
            time.sleep(0)
            url="xxxxxxxx/page{0}.html?{1}".format(_p+1,pram)
            wbdata = requests.get(url).text
            soup = BeautifulSoup(wbdata,'html.parser')
            print("+++++++++第{0}页的内容+++++++++".format(_p+1))
        item_lst = soup.select("#utopia_widget_6 > div.demand-list > div.demand-card")
        #% 对返回的列表进行遍历
        for item in item_lst:
            id_item+=1
            price=item.select('div.demand-card-body > div.demand-price')[0].get_text().strip()
            n=price.find('\n',1)
            if n>-1:
                price=price[0:n]
            data = {
              '标题':item.select('a')[0].get_text().strip(),
              '报价':price,
              '发布时间':item.select('div.demand-card-head > span')[0].get_text().strip(),
              '参与人数':item.select('div.demand-card-head > span')[1].get_text().strip(),
              '链接':item.select('a')[0].get('href'),
              '内容':item.select('div.demand-card-body > div.demand-card-desc')[0].get_text().replace('\n','').strip()
            }
            lst_tmp.append(data)
            #print(id_item,data)
    return lst_tmp
def get_info(url): 
    url="https:"+url
    wbdata = requests.get(url).text
    soup = BeautifulSoup(wbdata,'html.parser')
    item_lst = soup.select("div.list-item-content > p.node-title")
    print(item_lst)
#%%
lst_data=get_lst()
def GetDF():
    df=pd.DataFrame(lst_data) 
    return df
#%% 定时器
import http.client
def get_webtime(host):
    #import http.client
    start = time.time()
    conn=http.client.HTTPConnection(host)
    conn.request("GET", "/")
    r=conn.getresponse()
    #r.getheaders() #获取所有的http头
    ts=r.getheader('date') #获取http头date部分
    #将GMT时间转换成北京时间
    ltime= time.strptime(ts[5:25], "%d %b %Y %H:%M:%S")
    end = time.time()
    print(end-start)
    return ltime
def fun_timer():
    _tm=get_webtime('www.baidu.com')
    #_tm.tm_hour+=8
    print('北京时间：{0}:{1}:{2}'.format(_tm.tm_hour,_tm.tm_min,_tm.tm_sec))
timer = threading.Timer(1, fun_timer)
timer.start()
def btn_refresh():
    items=tv.get_children()
    # print(items)
    # tv.selection(selop='set',items=items)
    tv.delete(*items)
    lst_data=get_lst()
    i=0
    for item in lst_data:
        tv.insert('',i,values=(item['标题'],item['报价'],item['发布时间'],item['参与人数'],item['链接'],item['内容']))
        i+=1
    
def btn_Del():
    items=tv.get_children()
    tv.delete(*items)

root = tk.Tk()
root.geometry("1280x800")
_width=10
FrmTop=tk.Frame(root,height=50)
FrmTop.pack(side=tk.TOP,fill=tk.X)
tk.Button(FrmTop,name='bt1', text='刷新',width=_width, bg="LightGrey", command=btn_refresh).pack(fill=tk.Y, side=tk.LEFT)
tk.Button(FrmTop,name='bt2', text='清空',width=_width, bg="LightGrey", command=btn_Del).pack(fill=tk.Y, side=tk.LEFT)
 
tv = ttk.Treeview(root, height=18, show="headings", columns=('col1','col2','col3','col4','col5','col6'))
tv.column('col1', width=200, anchor='w')
tv.column('col2', width=70, anchor='w')
tv.column('col3', width=100, anchor='w')
tv.column('col4', width=160, anchor='w')
tv.column('col5', width=50, anchor='w')
tv.column('col6', width=300, anchor='w')
tv.heading('col1', text='标题')
tv.heading('col2', text='报价')
tv.heading('col3', text='发布时间')
tv.heading('col4', text='参与人数')
tv.heading('col5', text='链接')
tv.heading('col6', text='内容')
def onDBClick(event):
    item = tv.selection()[0]
    print("you clicked on ", tv.item(item, "values"))
    link=tv.item(item, "values")[4]
    get_info(link)
tv.bind("", onDBClick)
i=0  
for item in lst_data:
    tv.insert('',i,values=(item['标题'],item['报价'],item['发布时间'],item['参与人数'],item['链接'],item['内容']))
    i+=1
    

vbar = ttk.Scrollbar(root,orient=tk.VERTICAL,command=tv.yview)
tv.configure(yscrollcommand=vbar.set)
vbar.pack(fill=tk.Y, side=tk.RIGHT)   

hbar = ttk.Scrollbar(root,orient=tk.HORIZONTAL,command=tv.xview)
tv.configure(xscrollcommand=hbar.set)
hbar.pack(fill=tk.X, side=tk.BOTTOM)  
tv.pack(fill=tk.BOTH, expand=tk.YES)
items=tv.get_children()

root.mainloop()