Screen Snip

from tkinter import *
from PIL import Image, ImageGrab
from tkinter import filedialog
import datetime
from io import BytesIO
import win32clipboard

def show(mode):
    root = Tk()
    root['bg'] = 'black'
    root.attributes('-alpha',0.6)
    root.attributes('-fullscreen',1)
    root.attributes('-transparentcolor','green')
    root.attributes('-topmost',1)
    root.bind('<Escape>',lambda e: root.destroy())
    root['cursor'] = 'crosshair'
    output = BytesIO()

    def start_rect(event):
        global rectx0,recty0

        rectx0 = canvas.canvasx(event.x)
        recty0 = canvas.canvasx(event.y)
        canvas.create_rectangle(rectx0, recty0, rectx0, recty0, fill="green",tag='rect')

    def draw_rect(event):
        rectx1 = canvas.canvasx(event.x)
        recty1 = canvas.canvasx(event.y)
        canvas.coords('rect',rectx0,recty0,rectx1,recty1)

    def stop_rect(event):
        rectx1 = canvas.canvasx(event.x)
        recty1 = canvas.canvasx(event.y)
        canvas.coords('rect',rectx0,recty0,rectx1,recty1)
        capture('rect')

    def capture(obj):
        # print('The points are: ',canvas.coords(obj))
        x0,y0,x1,y1 = canvas.bbox(obj)
        canvas.delete(obj)
        img = ImageGrab.grab(bbox=(x0,y0,x1,y1))
        save(img,mode)

    def save(img,mode):
        if mode == 's':
            close()

            today = f"Screenshot {datetime.datetime.strftime(datetime.datetime.now(),'%Y-%m-%d %H%M%S')}"
            dir = filedialog.asksaveasfilename(defaultextension='.png',filetypes=[('PNG file','*.png')],initialfile=today)
            if dir:
                img.save(dir)
                root.destroy()
            else:
                open()
        elif mode == 'c':
            img.convert('RGB').save(output,"BMP")
            data = output.getvalue()[14:]
            output.close()

            win32clipboard.OpenClipboard()
            win32clipboard.EmptyClipboard()
            win32clipboard.SetClipboardData(win32clipboard.CF_DIB, data)
            win32clipboard.CloseClipboard()
            root.destroy()

    def close():
        root.withdraw()

    def open():
        root.deiconify()

    canvas = Canvas(root,bg='black')
    canvas.pack(expand=1,fill='both')

    root.bind('<Button-1>',start_rect)
    root.bind('<ButtonRelease-1>',stop_rect)
    root.bind('<B1-Motion>',draw_rect)

    root.mainloop()

import keyboard

# press ctrl+shift+z to print "Hotkey Detected"
keyboard.add_hotkey('ctrl + shift + z', show, args=('s'))
keyboard.add_hotkey('ctrl + shift + x', show, args=('c'))

keyboard.wait('esc')