my First Python GUI | Python Fiddle

import win32gui
from re import match

def draw_line():
	print 'x1,y1,x2,y2?'
s=raw_input()
if match('\d+,\d+,\d+,\d+',s):
	x1,y1,x2,y2=s.split(',')
	x1=int(x1)
y1=int(y1)
x2=int(x2)
y2=int(y2)
hwnd=win32gui.WindowFromPoint((x1,y1))
hdc=win32gui.GetDC(hwnd)
x1c,y1c=win32gui.ScreenToClient(hwnd,(x1,y1))
x2c,y2c=win32gui.ScreenToClient(hwnd,(x2,y2))
win32gui.MoveToEx(hdc,x1c,y1c)
win32gui.LineTo(hdc,x2c,y2c)
win32gui.ReleaseDC(hwnd,hdc)
main()

def draw_point():
	print 'x,y,color?'
	s=raw_input()
if match('\d+,\d+,\d+',s):
	x,y,color=s.split(',')
x=int(x)
y=int(y)
color=int(color)
hwnd=win32gui.WindowFromPoint((x,y))
hdc=win32gui.GetDC(hwnd)
x1,y1=win32gui.ScreenToClient(hwnd,(x,y))
win32gui.SetPixel(hdc,x1,y1,color)
win32gui.ReleaseDC(hwnd,hdc)
main()

def get_pixel_col():
	print 'x,y?'
s=raw_input()
if match('\d+,\d+',s):
	x,y=s.split(',')
x=int(x)
y=int(y)
hwnd=win32gui.WindowFromPoint((x,y))
hdc=win32gui.GetDC(hwnd)
x1,y1=win32gui.ScreenToClient(hwnd,(x,y))
color=win32gui.GetPixel(hdc,x1,y1)
win32gui.ReleaseDC(hwnd,hdc)
print color
main()

def get_current_pos_info():
	x,y=win32gui.GetCursorPos()
hwnd=win32gui.WindowFromPoint((x,y))
hdc=win32gui.GetDC(hwnd)
x1,y1=win32gui.ScreenToClient(hwnd,(x,y))
print x,y,win32gui.GetPixel(hdc,x1,y1)
win32gui.ReleaseDC(hwnd,hdc)
main()

def main():
	print ('''l. draw line
			  p. draw point
              g. get pixel color
    		  c. get current mouse position's info''')
s=raw_input()
if s.lower()=='l':
	draw_line()
if s.lower()=='p':
	draw_point()
if s.lower()=='g':
	get_pixel_col()
if s.lower()=='c':
	get_current_pos_info()
main()

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