Python Tkinter config() — Update, List and Check Widget Options

Managing options of any object
Updating multiple options
Listing all options of the object
Value of the option
Listing all values of the option
Checking availability of the Option
Example 1
Example 2

By using config() we can access the object's options after its initialisation.

Note: config() and configure() are same.

Tkinter configure method to manage the options of any object after its initialization with examples

Managing options of any object 🔝

We can manage any options of the Tkinter object by using config(). Here is the code to change the background colour of the button.

b1.configure(background='yellow')

Updating multiple options 🔝

Here below code both lines about button b1 give same result.

b1 = tk.Button(my_w) # Only object is created with default options
b1.configure(text='Hi  Welcome',width=20,fg='red') #Options are changed.
b1.grid(row=2,column=2,padx=20,pady=30)

b1 = tk.Button(my_w,text='Hi  Welcome',width=20,fg='red')
b1.grid(row=2,column=2,padx=20,pady=30)

Listing all options of the object 🔝

We will get one dictionary with options as keys with values. Here b1 is our button we declared in above code. We used type() to get the Data type of the object.

print(type(b1.config())) # dictionary <class 'dict'>

As we are getting one dictionary, so we can use the keys() method to get all the keys or options as a list of all widget attributes.

print(b1.config().keys())

The output is here .

dict_keys(['activebackground', 'activeforeground', 'anchor', 
'background', 'bd', 'bg', 'bitmap', 'borderwidth', 'command', 'compound',
 'cursor', 'default', 'disabledforeground', 'fg', 'font', 'foreground', 
 'height', 'highlightbackground', 'highlightcolor', 'highlightthickness', 
 'image', 'justify', 'overrelief', 'padx', 'pady', 'relief', 'repeatdelay', 
 'repeatinterval', 'state', 'takefocus', 'text', 'textvariable', 'underline', 
 'width', 'wraplength'])

Value of the option 🔝

Any particular option's value we can display like this.

print(b1['width']) # value of the option = 20

Listing all values of the option 🔝

for options in b1.config():
    print(options + ": " + str(b1[options]))

Output ( more are there ... )

activebackground: SystemButtonFace
activeforeground: SystemButtonText
anchor: center
background: green
bd: 2
bg: green
----
----

Checking availability of the Option 🔝

if "bitmap" in l2.config():
#if "bitmap" in sb1.config():
    print("Option is available")
else:
    print("Option is Not available")

Example 1 🔝

Buttons to update background colour of window

Place four buttons in a window with different background colour. On Click of the button the window background colour should change to button background colour.

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("410x200")  
font1=('times', 14, 'bold')
def my_upd(colour): # to update the window background colour. 
    my_w.config(background=colour)
b1 = tk.Button(my_w,text='#FFFF00',font=font1,
    bg='#FFFF00',command=lambda:my_upd('#FFFF00')) 
b1.grid(row=0,column=0,padx=3,pady=30) 

b2 = tk.Button(my_w,text='#00FF00',font=font1,
    bg='#00FF00',command=lambda:my_upd('#00FF00')) 
b2.grid(row=0,column=1,padx=3,pady=30) 

b3 = tk.Button(my_w,text='#FF0000',font=font1,
    bg='#FF0000',command=lambda:my_upd('#FF0000')) 
b3.grid(row=0,column=2,padx=3,pady=30) 

b4 = tk.Button(my_w,text='#0000FF',font=font1,
    bg='#0000FF',command=lambda:my_upd('#0000FF')) 
b4.grid(row=0,column=3,padx=3,pady=30) 

my_w.mainloop()

Example 2 🔝

Buttons bg value same as windows background colour

Create one button which will have same background colour of the window. If the colour of the window is changed, then the background colour of the button should also change.

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("400x300")  
font1=('times', 16, 'bold')
my_w.config(background='#FFCC00') # background colour of window
b1 = tk.Button(my_w,text='Hi  Welcome',font=font1,
   width=20,bg=my_w['background']) # bg set to value of window
b1.grid(row=2,column=2,padx=20,pady=30)    

my_w.mainloop()

We can read any option value of a widget directly using widget['option_name'] syntax — same as reading a value from a dictionary. So my_w['background'] reads the current background colour of the window and assigns it to the button.
Text Button Entry How config() is used to manage background colour

Python Tkinter Tkinter Projects Python- Tutorials

Subhendu Mohapatra

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