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  1. import timeit
  2.  
  3. dct = dict.fromkeys(range(100000))
  4.  
  5. def bench_in(k):
  6.     for _ in range(10):
  7.         a = k in dct
  8.  
  9. def bench_in_keys(k):
  10.     for _ in range(10):
  11.         a = k in dct.keys()
  12.  
  13. N = 50
  14. for func in (bench_in, bench_in_keys):
  15.     for k in (1, 1000, 80000):
  16.         print("%-30s %.3f" % (func.__name__, 
  17.                               timeit.timeit(lambda : func(k), number=N)))
  18.  
  19.  
Success #stdin #stdout 3.34s 10912KB
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stdin
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Standard input is empty
stdout
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bench_in                       0.000
bench_in                       0.000
bench_in                       0.000
bench_in_keys                  0.783
bench_in_keys                  0.799
bench_in_keys                  1.651
https://ideone.com/ZxrgM
language:
Python (cpython 2.7.16)
created:
12 years ago
visibility:
public

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