Welcome folks today in this post we will be making a paint application inside tkinter using python. All the source code of application are given below.

Get Started

In order to get started we need to make a paint.py file inside the root directory. But first of all make sure python is installed on your system

Now also install tkinter by pip command

pip install tkinter

paint.py

from tkinter import *
from tkinter.colorchooser import askcolor
from PIL import ImageTk, Image

class Paint(object):

    DEFAULT_PEN_SIZE = 5.0
    DEFAULT_COLOR = 'black'

    def __init__(self):
        self.root = Tk()
        self.root.title('Paint')
        self.root.geometry('500x300')
        self.root.maxsize(500,300)
        self.root.minsize(500,300)
        
        
        self.paint_tools = Frame(self.root,width=100,height=300,relief=RIDGE,borderwidth=2)
        self.paint_tools.place(x=0,y=0)

        self.pen_logo = ImageTk.PhotoImage(Image.open('pen.png'))
        self.p = Label(self.paint_tools, text="pen",borderwidth=0,font=('verdana',10,'bold'))
        self.p.place(x=5,y=11)
        self.pen_button = Button(self.paint_tools,padx=6,image=self.pen_logo,borderwidth=2,command=self.use_pen)
        self.pen_button.place(x=60,y=10)

        self.brush_logo = ImageTk.PhotoImage(Image.open('brush.png'))
        self.b = Label(self.paint_tools,borderwidth=0,text='brush',font=('verdana',10,'bold'))
        self.b.place(x=5,y=40)
        self.brush_button = Button(self.paint_tools,image = self.brush_logo,borderwidth=2,command=self.use_brush) 
        self.brush_button.place(x=60,y=40)

        self.color_logo = ImageTk.PhotoImage(Image.open('color.png'))
        self.cl = Label(self.paint_tools, text='color',font=('verdana',10,'bold'))
        self.cl.place(x=5,y=70)
        self.color_button = Button(self.paint_tools,image = self.color_logo,borderwidth=2,command=self.choose_color)
        self.color_button.place(x=60,y=70)

        self.eraser_logo = ImageTk.PhotoImage(Image.open('eraser.png'))
        self.e = Label(self.paint_tools, text='eraser',font=('verdana',10,'bold'))
        self.e.place(x=5,y=100)
        self.eraser_button = Button(self.paint_tools,image = self.eraser_logo,borderwidth=2,command=self.use_eraser)
        self.eraser_button.place(x=60,y=100)

        self.pen_size = Label(self.paint_tools,text="Pen Size",font=('verdana',10,'bold'))
        self.pen_size.place(x=15,y=250)
        self.choose_size_button = Scale(self.paint_tools, from_=1, to=10, orient=VERTICAL)
        self.choose_size_button.place(x=20,y=150)
        



        self.c = Canvas(self.root, bg='white', width=600, height=600,relief=RIDGE,borderwidth=0)
        self.c.place(x=100,y=0)

        self.setup()
        self.root.mainloop()

    def setup(self):
        self.old_x = None
        self.old_y = None
        self.line_width = self.choose_size_button.get()
        self.color = self.DEFAULT_COLOR
        self.eraser_on = False
        self.active_button = self.pen_button
        self.c.bind('<B1-Motion>', self.paint)
        self.c.bind('<ButtonRelease-1>', self.reset)

    def use_pen(self):
        self.activate_button(self.pen_button)

    def use_brush(self):
        self.activate_button(self.brush_button)

    def choose_color(self):
        self.eraser_on = False
        self.color = askcolor(color=self.color)[1]

    def use_eraser(self):
        self.activate_button(self.eraser_button, eraser_mode=True)

    def activate_button(self, some_button, eraser_mode=False):
        self.active_button.config(relief=RAISED)
        some_button.config(relief=SUNKEN)
        self.active_button = some_button
        self.eraser_on = eraser_mode

    def paint(self, event):
        self.line_width = self.choose_size_button.get()
        paint_color = 'white' if self.eraser_on else self.color
        if self.old_x and self.old_y:
            self.c.create_line(self.old_x, self.old_y, event.x, event.y,
                               width=self.line_width, fill=paint_color,
                               capstyle=ROUND, smooth=TRUE, splinesteps=36)
        self.old_x = event.x
        self.old_y = event.y

    def reset(self, event):
        self.old_x, self.old_y = None, None


if __name__ == '__main__':
    Paint()

Screenshots

Now if you run the application by executing the application like this

python paint.py