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• By adding the lru_cache decorator we can tell Python to cache the result and save on computation time.
• functools

examples/decorators/with_lru_cache.py

import functools

@functools.lru_cache()
def compute(x, y):
    print(f"Called with {x} and {y}")
    # some long computation here
    return x+y

print(compute(2, 3))
print(compute(3, 4))
print(compute(2, 3))

Called with 2 and 3
5
Called with 3 and 4
7
5