Print bytes to hex

Question

I want to encode string to bytes.

To convert to byes, I used byte.fromhex()

>>> byte.fromhex(\'7403073845\')
b\'t\\x03\\x078E\'         


        

Answer 1

The Python repr can't be changed. If you want to do something like this, you'd need to do it yourself; bytes objects are trying to minimize spew, not format output for you.

If you want to print it like that, you can do:

from itertools import repeat

hexstring = '7403073845'

# Makes the individual \x## strings using iter reuse trick to pair up
# hex characters, and prefixing with \x as it goes
escapecodes = map(''.join, zip(repeat(r'\x'), *[iter(hexstring)]*2))

# Print them all with quotes around them (or omit the quotes, your choice)
print("'", *escapecodes, "'", sep='')

Output is exactly as you requested:

'\x74\x03\x07\x38\x45'