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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 bytes_generator(num):
  14.     bytes_len = (num.bit_length() + 7) // 8
  15.     return map(hex, num.to_bytes(bytes_len, byteorder='big'))
  16.  
  17.  
  18. def split_bytes(num, as_string=False):
  19.     if as_string:
  20.         return f'[{",".join(bytes_generator(num))}]'
  21.     return list(bytes_generator(num))
  22.  
  23.  
  24.  
  25. if __name__ == '__main__':
  26.     t1 = timeit.timeit("toByteHexArray(0x3E75C28F3E75C28F3E75)", 'from __main__ import toByteHexArray')
  27.     t3 = timeit.timeit("split_bytes(0x3E75C28F3E75C28F3E75)", 'from __main__ import split_bytes, bytes_generator')
  28.     t6 = timeit.timeit("split_bytes(0x3E75C28F3E75C28F3E75, True)", 'from __main__ import split_bytes, bytes_generator')
  29.     print(t1)
  30.     print(t3)
  31.     print(t6)
Success #stdin #stdout 4.83s 9616KB
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2.050251701846719
1.3436660636216402
1.4344372730702162
https://ideone.com/a51m0E
language:
Python 3 (python  3.12)
created:
4 years ago
visibility:
public

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