converting an int to bytes

[Skaperen]

i can convert an int to bytes by first converting to hexadecimal characters (and maybe prefixing a '0' to make an even number of digits). is there any more direct way to convert an int to the binary equivalent sequence of bytes without doing the hexadecimal conversion and/or adjusting the number of hexadecimal digits to a multiple of two.

for those of you that like to have code you can squish in your fingers...

bytes_to_int.py:

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t = bytes,bytearray def bytes_to_int(bytes=None):     """Convert bytes or bytearray to int."""     if bytes is None:         return None     if isinstance(bytes,t):         return int.from_bytes(bytes)     raise TypeError('arg 1 type must be bytes or bytearray')

int_to_bytes.py:

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t = int def int_to_bytes(int=None):     """Convert int to bytes."""     if int is None:         return None     if isinstance(int,t):         h=hex(int)[2:]         if len(h)%2:             h='0'+h         return bytes.fromhex(h)     raise TypeError('arg 1 type must be int')

the above code is not tested, yet. i may test it, some day.

[rob101]

You could could first convert the integer to a list of 'bits', then format some output of that list, maybe in groups of four for the 'bytes', or maybe as a simple stream of 'bits'

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dec = 101 bits = [bit for bit in str(bin(dec))[2:]] print(''.join(bit for bit in bits))

Output:
1100101

Or maybe there's a point here that I'm missing.

[Gribouillis]

Isn't int.to_bytes() the contrary of int.from_bytes()?

[Skaperen]

oooh, i completely missed that one. must have not done the "_" version of the attribute name when i searched.

[Skaperen]

can you message to me what that link was? i can't remember it from so long ago. i want to figure out if something got 0wn3d.