如何在 tkinter 中打印 Entry() 的值？

Question

Im just simply trying to print the values of the entry fields and it tells me its not defined. I been looking online for a long while now. The lastest thing that I tried was adding self as a parameter of add_student but that didn't work.

This is the code

from tkinter import *

class window(Frame):
    def __init__(self, master=None):
        Frame.__init__(self, master)
        self.master = master
        self.widgets()

    def add_student(self):
        print(f"Student's name (first, last): {self.fname_textbox}, {self.lname_textbox}")

    def widgets(self):

        self.master.title("Student Test Score & Grade")
        self.master.minsize(200,200)

        """ Labels """
        # First name
        self.fname_label = Label(root, text='First Name: ')
        self.fname_label.grid(row=0, column=0, padx=5, pady=5)

        # Last Name
        self.lname_label = Label(root, text='Last name: ')
        self.lname_label.grid(row=1, column=0, padx=5, pady=5)

        """ Entry boxes """
        # First Name
        self.fname_textbox = Entry(root, width=30)
        self.fname_textbox.grid(row=0, column=1, padx=5)

        # Last name
        self.lname_textbox = Entry(root, width=30)
        self.lname_textbox.grid(row=1, column=1, padx=5)

        """ Buttons """
        # Add Button
        self.add_btn = Button(root, text="Add Student", command=self.add_student).grid(row=4, column=2, padx=2, pady=2)

if __name__=="__main__":
    root = Tk()
    root.resizable(width=False, height=False)
    app = window(root)
    root.mainloop()

It prints this

Student's name (first, last): .!entry, .!entry2

Instead of: Student's name (first, last): John, Doe

What does this mean?

Answer 1

Ah, Try something like this:

def __init__(self, master):
    self.nameEntry = Entry(master)
    self.contents = StringVar()
    self.nameEntry["textvariable"]=self.contents
    self.nameEntry.pack()
    self.nameEntry.grid(row=0,column=1)
    self.buttonSave = Button(master,text="Save",command=self.save).grid(row=9,columnspan=2, sticky=W+E+N+S)

def save(self):
    print self.nameEntry.get()

Answer 2

You need to get the value of the entries in order to use them in your print statement You do this by putting:

firstname = self.fname_textbox.get() 
lastname = self.1fname_textbox.get()

before you print and using these values in your print statement.