Check if lat long is inside the bounds of the continental US (box model, not shape)

cull.py

# http://en.wikipedia.org/wiki/Extreme_points_of_the_United_States#Westernmost
top = 49.3457868 # north lat
left = -124.7844079 # west long
right = -66.9513812 # east long
bottom =  24.7433195 # south lat

def cull(latlngs):
    """ Accepts a list of lat/lng tuples. 
        returns the list of tuples that are within the bounding box for the US.
        NB. THESE ARE NOT NECESSARILY WITHIN THE US BORDERS!
    """
    inside_box = []
    for (lat, lng) in latlngs:
        if bottom <= lat <= top and left <= lng <= right:
            inside_box.append((lat, lng))
    return inside_box
    

Great find and thank you!