def pixelstolatlon(px, py, zoom):
	import urllib
	from io import StringIO
	from PIL import Image
	from math import log, exp, tan, atan, pi, ceil
	

	EARTH_RADIUS = 6378137
	EQUATOR_CIRCUMFERENCE = 2 * pi * EARTH_RADIUS
	INITIAL_RESOLUTION = EQUATOR_CIRCUMFERENCE / 256.0
	ORIGIN_SHIFT = EQUATOR_CIRCUMFERENCE / 2.0
	
	res = INITIAL_RESOLUTION / (2**zoom)
	mx = px * res - ORIGIN_SHIFT
	my = py * res - ORIGIN_SHIFT
	lat = (my / ORIGIN_SHIFT) * 180.0
	lat = 180 / pi * (2*atan(exp(lat*pi/180.0)) - pi/2.0)
	lon = (mx / ORIGIN_SHIFT) * 180.0
	print('lat'+str(lat))
	print('lon'+str(lon))
	return lat, lon