Calc the near lat,lng in radius

get_near_point.py

import random
def get_near_point( lat,lng, radius):
    """ http://gis.stackexchange.com/questions/25877/how-to-generate-random-locations-nearby-my-location"""
    import math
    u = random.random()
    v = random.random()
    r_d = radius/111300.0
    t = 2* math.pi*v
    w = r_d * math.sqrt(u)
    x = w* math.cos(t)
    y = w*math.sin(t)
    newx = x/math.cos(float(lat))
    return ( y+ float(lat), newx + float(lng))


print get_near_point(21.030093, -89.558248, 100)