CODEWITHSUNDEEP
python
Mateus Felipe Martins Da Costa
Mateus Felipe Martins Da Costa

Reputation: 117

Show only the hexadecimal string

I'm writing a code on Python to read information from a RFID, but how I'd left only the hexadecimal part?

Code:

import serial as s
ser = s.Serial('COM8', 9600, timeout=10000)
rfid = ser.read(13).splitlines()
print(rfid)

Output:

[b'\x024500F38EC7FF']

Expected Output:

4500F38EC7FF

Upvotes: 0

Views: 64

Answers (3)

lqhcpsgbl
lqhcpsgbl

Reputation: 3782

line = [b'\x024500F38EC7FF']
line[0][1:]

Do you mean this way?

Upvotes: 0

Peter Gibson
Peter Gibson

Reputation: 19564

If you want just the ASCII characters you can split the string to remove the leading 0x02 character

>>> x = b'\x024500F38EC7FF'
>>> x[1:] # skip the first character
'4500F38EC7FF'

If you want the values of each character as integers,

>>> [ord(c) for c in x]
[2, 52, 53, 48, 48, 70, 51, 56, 69, 67, 55, 70, 70]

Or if you want a hexadecimal representation of each character, you can use something like

>>> ' '.join('%02x' % ord(c) for c in x)
'02 34 35 30 30 46 33 38 45 43 37 46 46'

Upvotes: 1

Dinesh
Dinesh

Reputation: 4559

Because splitlines() returns you an array, which is what you see on print

Try simply print rfid[0], that might do what you want. 

>>> x = b'\x024500F38EC7FF'
>>> print(x)
4500F38EC7FF

Upvotes: 1

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