This might help
import binascii
x = b'test'
x = binascii.hexlify(x)
y = str(x,'ascii')
print(x) # Outputs b'74657374' (hex encoding of "test")
print(y) # Outputs 74657374
x_unhexed = binascii.unhexlify(x)
print(x_unhexed) # Outputs b'test'
x_ascii = str(x_unhexed,'ascii')
print(x_ascii) # Outputs test
This code contains examples for converting ASCII characters to and from hexadecimal. In your situation, the line you'd want to use is str(binascii.hexlify(c),'ascii')
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Source: Stackoverflow.com