def main(verbose=False):
"""
Main program code. Assume running on a single server
with cache stored in memory
"""
# Initialize a new LRU cache with size of max_size
address_cache = LRUCache.SimpleCache(max_size=50000)
# Accept first simple user input
input_address_str_1 = input("1. First address to look up? ")
# Check the cache
sales_tax_1 = address_cache.fast_rate_lookup(input_address_str_1)
if sales_tax_1 == -1:
# Call the PSL function
if verbose:
print("Missing from cache -- calling PSL function")
sales_tax_1 = sales_tax_lookup(input_address_str_1)
# Add new sales_tax value to the cache
address_cache.set(input_address_str_1, sales_tax_1)
if verbose:
print("Sales tax rate for address (%s): %0.2f" % (input_address_str_1, sales_tax_1))
print("Current cache size: %d" % address_cache.size())
# Accept second simple user input
input_address_str_2 = input("2. Second address to look up? ")
# Check the cache
sales_tax_2 = address_cache.fast_rate_lookup(input_address_str_2)
if sales_tax_2 == -1:
# Call the PSL function
if verbose:
print("Missing from cache -- calling PSL function")
sales_tax_2 = sales_tax_lookup(input_address_str_2)
# Add new sales_tax value to the cache
address_cache.set(input_address_str_2, sales_tax_2)
if verbose:
print("Sales tax rate for address (%s): %0.2f" % (input_address_str_2, sales_tax_2))
print("Current cache size: %d" % address_cache.size())
