<input type="file" style="display:none;" id="file"><a "files()">替换头像</a><a id="file2" "upimg()" style="display:none">确定更换</a>

您可以使用Python的Tkinter GUI库来实现文件上传的功能。下面是一个简单的例子，可以让您选择文件并将其上传到指定的位置。请注意，这个示例使用了tkFileDialog，它已经被弃用，但它仍然可以工作。在实际应用中，您最好使用filedialog库。

import os
import tkinter as tk
import tkinter.filedialog as fd

def select_file():
    filetypes = (("Image files", "*.jpg;*.jpeg;*.png"), ("All files", "*.*"))
    filename = fd.askopenfilename(title="Select a file", initialdir="/", filetypes=filetypes)
    return filename

def upload_file(filename):
    # Here you can specify the code to upload the file to the desired location
    print("File uploaded:", filename)

def files():
    filename = select_file()
    if filename:
        upload_file(filename)

root = tk.Tk()
root.withdraw()

file = tk.Button(root, text="替换头像", command=files)
file.pack()

root.mainloop()