python "functionround brackets -"parenthesesprint('helloworld!'function' "argumentprint print "case sensitive this is our first python "functiona function takes some inputdoes something with it and (optionallyreturns value the nomenclature derives from the mathematics of functionsbut we don' need to fixate on the mathematical underpinnings of computer science in this course our function in this case is "printand the command necessarily starts with the name of the function the inputs to the function are called its "argumentsand follow the function inside round brackets ("parentheses"in this case there is single argumentthe text to print note that pythonas with many but not all programming languagesis "case sensitivethe word "printis not the same as "printor "print