python自制英汉词典

作为一位python小白，无意间发现在jclian91发布的博客中做了个爬取有道词典的翻译爬虫，本着学习的态度，借鉴大佬的代码，自己也撸了串代码，完成了自己的第一个爬虫代码，添加了gui界面，添加了从汉翻英的功能。
代码中用到的第三方库自行通过pip install安装
代码如下：

#! python3
# -*- coding: UTF-8 -*-
# Author:fan liu
import requests
from bs4 import BeautifulSoup
from fake_useragent import UserAgent
import re
import wx
class MyFrame(wx.Frame):
    def __init__(self,parent,id):
        wx.Frame.__init__(self,parent,id,title='translate',size=(410,335))
        bkg=wx.Panel(self)
        self.Btn1=wx.Button(bkg,label='中文翻译')
        self.Btn1.Bind(wx.EVT_BUTTON,self.ch_trans)
        self.Btn3=wx.Button(bkg,label='英文翻译')
        self.Btn3.Bind(wx.EVT_BUTTON,self.eng_trans)
        self.Btn2=wx.Button(bkg,label='清除')
        self.Btn2.Bind(wx.EVT_BUTTON,self.clear)
        self.word=wx.TextCtrl(bkg)
        self.contents=wx.TextCtrl(bkg,style=wx.TE_MULTILINE|wx.HSCROLL)
        self.hbox=wx.BoxSizer()
        self.hbox.Add(self.word,proportion=1,flag=wx.EXPAND)
        self.hbox.Add(self.Btn1,proportion=0,flag=wx.LEFT,border=5)
        self.hbox.Add(self.Btn3,proportion=0,flag=wx.LEFT,border=5)
        self.hbox.Add(self.Btn2,proportion=0,flag=wx.LEFT,border=5)
        self.vbox=wx.BoxSizer(wx.VERTICAL)
        self.vbox.Add(self.hbox,proportion=0,flag=wx.EXPAND | wx.ALL,border=5)
        self.vbox.Add(self.contents,proportion=1,
             flag=wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM,border=5)
        bkg.SetSizer(self.vbox)
    def ch_trans(self,event):
        word=self.word.GetValue()
        ua=UserAgent()
        headers={'User-Agent':ua.random}
        try:
            string=''
            string1=''
            r=requests.get(url='http://dict.youdao.com/w/%s/#keyfrom=dict2.top'%word,headers=headers)
            soup=BeautifulSoup(r.text,'lxml')
            s=soup.find(class_="trans-container")('ul')[0]('p')
            for item in s:
                if item.text:
                    string=str(item.text)
                    li=re.split('[\n]+',string)
                    for i in li:
                        string1+=i
                    string1+='\n'
            self.contents.SetValue(string1)
        except Exception:
            self.contents.SetValue('something goes wrong!')
    def eng_trans(self,event):
        word=self.word.GetValue()
        ua=UserAgent()
        headers={'User-Agent':ua.random}
        try:
            r=requests.get(url='http://dict.youdao.com/w/%s/#keyfrom=dict2.top'%word,headers=headers)
            soup=BeautifulSoup(r.text,'lxml')
            s=soup.find(class_="trans-container")('ul')[0]('li')
            string=''
            for item in s:
                if item.text:
                    string+=str(item.text)+'\n'
            self.contents.SetValue(string)
        except Exception:
            self.contents.SetValue('something goes wrong!')
    def clear(self,event):
        self.word.SetValue('')
        self.contents.SetValue('')
if __name__=='__main__':
    app=wx.App()
    frame=MyFrame(None,-1)
    frame.Show()
    app.MainLoop()