Astwro tools are python scripts, ready to use from command line.
Each script has --help option to display usage.
All scripts can be also used as python modules (this is the reason they have py extension). Each script exports main(**kwargs) function which exposes it's functionality. Also scripts exports info() function which returns usage string -- convenient way to find out script purpose and main() parameters for ones working with python interactively.
Some of the scipts are installed in system by pip install astwro:
gapick <astwro.tools.gapick>see:gapickgrepfitshdr <astwro.tools.grepfitshdr>