Aescrypt / pyAesCrypt / Python

Hi,

on my Pinebook Pro with Armbian, I would like to use AesCrypt like on all my other Linux and Windows and Android systems, but here on Armbian, I need some support...

- AesCrypt seems not to be available as deb package in Armbian and also Debian repos, right?
 

- install AesCrypt directly from AesCrypt website as deb package with gdebi doesn"t work, guess because it is for x86 only

- so I would like to make use of pyAesCryt as module in my Python script

- the way as I know it from Archlinux and Manjaro, 

pip install pyAesCrypt

 does not work, get a message "environment is externally managed, not Debian-packaged software has to be installed via pipx"
(I don't know what "externally managed environment" means, seems to special in Debian / Armbian. Is there a good documentation?)
 

- now, 

pipx install pyAesCryt

installs pyAesCryt sucessfully, and I also did the recommended 

pipx ensurepath

- but, pyAesCrypt is not listed as installed module and 
 

- with adapted calls in my methods (aescrypt to pyaescrypt) and an module import
 

import pyAesCrypt

after starting the script, when it comes to the call, an error message says " no such module"

 

Any help would be much appreciated!