How to use python to lookup information at specific latitude/longitude in a ESRI shapefile?

I have a ESRI shapefile (from here: http://pubs.usgs.gov/ds/425/). I looking to use python to lookup information from the shape file (surficial material in this case) at a given latitude/longitude.

What is the best way to go about solving this problem?

Thanks.

Final solution:

#!/usr/bin/python

from osgeo import ogr, osr

dataset = ogr.Open('./USGS_DS_425_SHAPES/Surficial_materials.shp')
layer = dataset.GetLayerByIndex(0)
layer.ResetReading()

# Location for New Orleans: 29.98 N, -90.25 E
point = ogr.CreateGeometryFromWkt("POINT(-90.25 29.98)")

# Transform the point into the specified coordinate system from WGS84
spatialRef = osr.SpatialReference()
spatialRef.ImportFromEPSG(4326)
coordTransform = osr.CoordinateTransformation(
        spatialRef, layer.GetSpatialRef())

point.Transform(coordTransform)

for feature in layer:
    if feature.GetGeometryRef().Contains(point):
        break

for i in range(feature.GetFieldCount()):
    print feature.GetField(i)