_cached_result = None
def myComputationallyExpensiveFunction():
global _cached_result
if _cached_result:
return _cached_result
# ... figure out result
_cached_result = result
return result
def myComputationallyExpensiveFunction():
if myComputationallyExpensiveFunction.cache:
return myComputationallyExpensiveFunction.cache
# ... figure out result
myComputationallyExpensiveFunction.cache = result
return result
myComputationallyExpensiveFunction.cache = None