This library will help you to decode raw SMS data you can get from a GSM modem.
It has some encoding functionality as well.
It is recommended to read GSM 03.40 to facilitate understanding.
Requires Python 3.6 or 3.7.
pip install smspdudecoder
If you want to experiment with it, clone the repository, do some changes, and type tox (tox needs to be installed) to launch tests.
Please take a look at the source code, which comes with documentation and examples.
For instance, you can use GSM and UCS2 encodings just like that:
>>> from smspdu.codecs import GSM, UCS2
>>> GSM.decode('C8F71D14969741F977FD07')
'How are you?'
>>> UCS2.decode('004C006F00720065006D00200049007000730075006D')
'Lorem Ipsum'