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  1. import timeit
  2.  
  3.  
  4. def toByteHexArray(n):
  5.     string = hex(n) 
  6.     if len(string) % 2 == 1:
  7.         pairs = zip("0"+string[::2], string[1::2])
  8.     else:
  9.         pairs = zip(string[::2], string[1::2])
  10.     return "[0x" + ",0x".join([a + b for a, b in pairs]) + "]"
  11.  
  12.  
  13. def split_bytes(n, as_string=False):
  14.     result = []
  15.     keep_going = True
  16.     while keep_going:
  17.         if n >> 8 == 0:
  18.             keep_going = False
  19.         result.insert(0, hex(n & 0xFF))
  20.         n = n >> 8
  21.  
  22.     if as_string:
  23.         return f'[{",".join(result)}]'
  24.  
  25.     return result
  26.  
  27.  
  28. if __name__ == '__main__':
  29.     t1 = timeit.timeit("toByteHexArray(0x3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F)", 'from __main__ import toByteHexArray', number=100000)
  30.     t2 = timeit.timeit("split_bytes(0x3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F)", 'from __main__ import split_bytes', number=100000)
  31.     t3 = timeit.timeit("split_bytes(0x3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F3E75C28F, True)", 'from __main__ import split_bytes', number=100000)
  32.     print(t1)
  33.     print(t2)
  34.     print(t3)
  35.  
Success #stdin #stdout 2.56s 9748KB
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0.42058293521404266
1.0317785665392876
1.0887723676860332
https://ideone.com/YWEZrs
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
public

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