25 lines
396 B
Python
25 lines
396 B
Python
import time
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ef_cache = {}
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def expensive_func(num):
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if num in ef_cache:
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return ef_cache[num]
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print "Computing {}...".format(num)
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time.sleep(1)
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result = num*num
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ef_cache[num] = result
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return result
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result = expensive_func(4)
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print result
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result = expensive_func(10)
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print result
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result = expensive_func(4)
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print result
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result = expensive_func(10)
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print result |