Different datasets wrapper functions that could be used for different purposes. Details are in the docstring of each function.
This is an example to show how to call the county lookup table.
from skills_ml.datasets.sba_city_county import county_lookup
lookup = county_lookup()
# This will give you a dictionary of cities in Illinois
print lookup['IL']
# This will tell you what county and its fips county code
# the city belongs to
print lookup['IL']['Chicago']