Ardalan Hayatifar

@newville I’ve had the same problem several times on my Mac computers. I never figured it out. However I guess it’s related to python PATH on the system. The problem...

@LaurenPincus You can check your default shell when you open a terminal window. Or by ```echo $SHELL``` command. You can see them using ```nano ~/.zshrc``` or ```nano ~/.bashrc```. Also when...

@LaurenPincus what about ```which python``` and ```echo $PATH```? Mine shows that xraylarch is in the PATH: ``` (base) ardalan@Ardalans-MBP ~ % which python /Users/ardalan/xraylarch/bin/python (base) ardalan@Ardalans-MBP ~ % echo $PATH...