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  1. import timeit
  2.  
  3. s = """
  4. import collections
  5. import itertools
  6. def JonClements(iterable):
  7.     i = iter(iterable)
  8.     return any(i) and not any(i)
  9.  
  10.  
  11. def only_n(l, testval=True, coerce=bool, n=1):
  12.     counts = collections.Counter()
  13.     def iterate_and_count():
  14.         for x in itertools.imap(coerce,l):
  15.             yield x
  16.             if x == testval and counts[testval] > n:
  17.                break
  18.     counts.update(iterate_and_count())
  19.     return counts[testval] == n
  20.  
  21. def only_truthy(l, n=1):
  22.     counts = collections.Counter()
  23.     def iterate_and_count():
  24.         for x in l:
  25.             if x: 
  26.                 yield True
  27.                 if counts[True] > n: break
  28.             else: yield False
  29.  
  30.     counts.update(iterate_and_count())
  31.     return counts[True] == n
  32.  
  33. def only_truthy_fixed(l, n=1):
  34.     tcount = 0
  35.     for x in l:
  36.         if x: 
  37.            tcount += 1
  38.            if tcount > n: return False
  39.     return tcount == n
  40.  
  41. def nisanh(iterable, n=1, m=1): 
  42.     i = iter(iterable) 
  43.     return  m <= sum(any(i) for x in xrange(n+1)) <= n
  44.  
  45. """
  46. def nisanh(iterable, n=1, m=1): 
  47.     i = iter(iterable) 
  48.     return  list(any(i) for x in xrange(n+1))
  49. print nisanh([2,3,None])
  50. print nisanh([None,3,None])
  51.  
  52. def JonClements(iterable):
  53.     i = iter(iterable)
  54.     return any(i) and not any(i)
  55.  
  56. print JonClements([2,3,None])
  57. print JonClements([None,3,None])
  58.  
  59. number = 500
  60. truelist = "l=[True]*10000"
  61.  
  62. falselist = "l=[False]*10000"
  63. print timeit.timeit("only_n(l)", s+truelist, number=number)
  64. print timeit.timeit("only_n(l)", s+falselist, number=number)
  65.  
  66. print timeit.timeit("only_truthy(l)", s+truelist, number=number)
  67. print timeit.timeit("only_truthy(l)", s+falselist, number=number)
  68.  
  69. print timeit.timeit("only_truthy_fixed(l)", s+truelist, number=number)
  70. print timeit.timeit("only_truthy_fixed(l)", s+falselist, number=number)
  71.  
  72.  
  73. print timeit.timeit("JonClements(l)", s+truelist, number=number)
  74. print timeit.timeit("JonClements(l)", s+falselist, number=number)
  75.  
  76. print timeit.timeit("nisanh(l)", s+truelist, number=number)
  77. print timeit.timeit("nisanh(l)", s+falselist, number=number)
Success #stdin #stdout 6.97s 8888KB
comments (?)
stdin
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Standard input is empty
stdout
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[True, True]
[True, False]
False
True
0.005126953125
3.65571117401
0.00443387031555
2.84306001663
0.00028395652771
0.275062084198
0.000324010848999
0.046404838562
0.000968933105469
0.0430569648743
https://ideone.com/ZRrv2m
language:
Python (cpython 2.7.16)
created:
10 years ago
visibility:
secret

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