Use Python's argparse module in shell scripts. The function argparse parses its arguments using argparse.ArgumentParser.The command line options are defined in the function's stdin. argparse.bash ...

Stdout says that the package python3-dnf-4.2.17-7.el8_2.noarch is already installed, nothing to do.. As I don't have this issue on other hosts, I've checked the differencies and they are with Python 3 ...