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  1. import timeit, dis
  2.  
  3. setup = "import array; a = array.array('i', [1, 2, 3])"
  4. for _ in range(2):
  5.     for stmt in 'a[:]', 'a * 1':
  6.         print('%-7s' % stmt, timeit.timeit(stmt, setup, number=10**7))
  7.  
  8. dis.dis(compile('a[:]', '', 'eval'))
  9. dis.dis(compile('a * 1', '', 'eval'))
Success #stdin #stdout 3.61s 9880KB
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stdin
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Standard input is empty
stdout
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a[:]    0.9178518699482083
a * 1   0.8773866342380643
a[:]    0.9160326523706317
a * 1   0.8775129402056336
  1           0 LOAD_NAME                0 (a)
              3 LOAD_CONST               0 (None)
              6 LOAD_CONST               0 (None)
              9 BUILD_SLICE              2
             12 BINARY_SUBSCR
             13 RETURN_VALUE
  1           0 LOAD_NAME                0 (a)
              3 LOAD_CONST               0 (1)
              6 BINARY_MULTIPLY
              7 RETURN_VALUE
https://ideone.com/KLb3wl
language:
Python 3 (python  3.12)
created:
8 years ago
visibility:
public

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