keep/module_functools/functools_lru_cache.py at master · tinylambda/keep · GitHub

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import functools

@functools.lru_cache()

def expensive(a, b):

print("expensive({}, {})".format(a, b))

return a * b

MAX = 2

print("First set of calls: ")

for i in range(MAX):

for j in range(MAX):

expensive(i, j)

print(expensive.cache_info())

print("\nSecond set of calls")

for i in range(MAX + 1):

for j in range(MAX + 1):

expensive(i, j)

print(expensive.cache_info())

print("\nClearing cache: ")

expensive.cache_clear()

print(expensive.cache_info())

print("\nThird set of calls: ")

for i in range(MAX):

for j in range(MAX):

expensive(i, j)

print(expensive.cache_info())