[Python] How can I update a text name on a label on Tkinter:

I want that when I upload a file, the label changes its name to file name to filename name.

#File class
class File:
def __init__(self):
self.filename = None
def getFile(self):
self.filename = filedialog.askopenfilename()
#Button class
class importtextName(File):
def __init__(self):
self.name = "Select a file to encrypt: "
def update(self, filename):
self.name = self.filename

#Layout Encrypt:
importtext = importtextName()
importtext = tk.Label(layoutframe, text=importtext.name)
importtext.grid(column=0, row=0, sticky=tk.EW, padx=5, pady=5)

#Redirection to import function
file = File()
button_encrypt = tk.Button(layoutframe, text="Encrypt", fg="green", command=file.getFile)
button_encrypt.grid(column=1, row=0, sticky=tk.EW, padx=5, pady=5)

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