Python Tkinter – Entry

 Python Tkinter – Entry

In Python3 Tkinter is come preinstalled But you can also install it by using the command: 
 

pip install tkinter

The Entry Widget
The Entry Widget is a Tkinter Widget used to Enter or display a single line of text. 
 
Syntax : 
entry = tk.Entry(parent, options)
Parameters: 
 
1) Parent: The Parent window or frame in which the widget to display.
2) Options: The various options provided by the entry widget are: 
 
bg : The normal background color displayed behind the label and indicator. 
bd : The size of the border around the indicator. Default is 2 pixels. 
font : The font used for the text. 
fg : The color used to render the text. 
justify : If the text contains multiple lines, this option controls how the text is justified: CENTER, LEFT, or RIGHT. 
relief : With the default value, relief=FLAT. You may set this option to any of the other styles like : SUNKEN, RIGID, RAISED, GROOVE 
show : Normally, the characters that the user types appear in the entry. To make a .password. entry that echoes each character as an asterisk, set show=”*”. 
textvariable : In order to be able to retrieve the current text from your entry widget, you must set this option to an instance of the StringVar class.
Methods: The various methods provided by the entry widget are: 
get() : Returns the entry’s current text as a string. 
delete() : Deletes characters from the widget 
insert ( index, ‘name’) : Inserts string ‘name’ before the character at the given index. 
# Program to make a simple 
# login screen 
 import tkinter as tk 
 root=tk.Tk() 

 # setting the windows size 
root.geometry("600x400") 

 # declaring string variable 
# for storing name and password 
name_var=tk.StringVar() 
passw_var=tk.StringVar()

 # defining a function that will 
# get the name and password and 
# print them on the screen 

def submit(): 
    name=name_var.get() 
    password=passw_var.get() 
    print("The name is : " + name) 
    print("The password is : " + password) 
    name_var.set("") 
    passw_var.set("") 


# creating a label for 
# name using widget Label 
name_label = tk.Label(root, text = 'Username', font=('calibre',10, 'bold')) 

 # creating a entry for input 
# name using widget Entry 
name_entry = tk.Entry(root,textvariable = name_var, font=('calibre',10,'normal')) 

# creating a label for password 
passw_label = tk.Label(root, text = 'Password', font = ('calibre',10,'bold')) 

 # creating a entry for password 
passw_entry=tk.Entry(root, textvariable = passw_var, font =('calibre',10,'normal'), show = '*') 

 # creating a button using the widget 
# Button that will call the submit function 

sub_btn=tk.Button(root,text = 'Submit', command = submit) 

# placing the label and entry in 
# the required position using grid 
# method 
name_label.grid(row=0,column=0) 
name_entry.grid(row=0,column=1) 
passw_label.grid(row=1,column=0) 
passw_entry.grid(row=1,column=1) 
sub_btn.grid(row=2,column=1) 

 # performing an infinite loop 
# for the window to display 

root.mainloop()