return then using shows us the docstringin [ ]add_numberstypefunction string formfilebook_scriptsdefinitionadd_numbers(abdocstringadd two numbers together returns the_sum type of arguments using ?will also show the function' source code if possiblein [ ]add_numbers?typefunction string formfilebook_scriptsdefinitionadd_numbers(absourcedef add_numbers(ab)""add two numbers together returns the_sum type of arguments ""return has final usagewhich is for searching the ipython namespace in manner similar to the standard unix or windows command line number of characters combined with the wildcard (*will show all names matching the wildcard expression for examplewe could get list of all functions in the top level numpy namespace containing loadin [ ]np *load*np load np loads np loadtxt np pkgload the %run command any file can be run as python program inside the environment of your ipython session using the %run command suppose you had the following simple script stored in ipy thon_script_test pydef (xyz)return ( yz ipython basics www it-ebooks info