Create a list of Hex value in python

Question

I'm working with pySerial library to read some byte from Serial Port.

I need to store these bytes into a list, but I would store data in Hex format because the serial peripheral send to me specific command code like 0x10, 0x30, ...

The code:

readByte = serialCOM.read(1)
print 'Read Payload byte:' + str(readByte)
packetPayload.append(readByte)

creates a list of char.

Which is the way to create a list of hex values?

Thanks!

How do you figure out that you have a list of chars? If you are printing it, python justs decodes these bytes to ASCII symbols while doing so. — Alexey Smirnov
– Alexey Smirnov, Commented Mar 29, 2016 at 15:18

aluriak · Accepted Answer · 2016-03-29 15:21:41Z

1

In Python, hex values are just an alternate view of integers:

>>> 1 == 0x01
True
>>> 16 == 0x10
True

So, here is a list:

>>> print([0x10, 0x20])
[16, 32]

It's also possible to use the int function to get integer value from a string:

>>> int('0x10', 16)  # here, the 16 is for the base, and 0x is optionnal
16

edited Mar 29, 2016 at 15:21

answered Mar 29, 2016 at 15:16

aluriak

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1 Comment

Federico Over a year ago

Thanks for your help!

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