记录python tkinter包获取本地绝对路径（用于获取图片并展示）

 import tkinter as tk

    
 import tkinter.filedialog
    
 import cv2
    
  
    
 def choose_file(): # 选择文件
    
     selectFileName = tk.filedialog.askopenfilename(title='选择文件')  
    
     e.set(selectFileName)
    
     
    
 def show(e_entry): #显示图片
    
     img = cv2.imread(e_entry.get())
    
     cv2.imshow("PICTURE",img)
    
     cv2.waitKey(0)
    
  
    
 def window(): 
    
     root = tk.Tk()
    
     root.geometry('650x450+150+100')
    
     root.title('test')
    
     root.resizable(False, False)
    
  
    
     global e
    
     e = tk.StringVar() #文本输入框