hello python worldwhen you run the file hello_world pythe ending py indicates that the file is python program your editor then runs the file through the python interpreterwhich reads through the program and determines what each word in the program means for examplewhen the interpreter sees the word printit prints to the screen whatever is inside the parentheses as you write your programsyour editor highlights different parts of your program in different ways for exampleit recognizes that print is the name of function and displays that word in blue it recognizes that "hello python world!is not python code and displays that phrase in orange this feature is called syntax highlighting and is quite useful as you start to write your own programs variables let' try using variable in hello_world py add new line at the beginning of the fileand modify the second linemessage "hello python world!print(messagerun this program to see what happens you should see the same output you saw previouslyhello python worldwe've added variable named message every variable holds valuewhich is the information associated with that variable in this case the value is the text "hello python world!adding variable makes little more work for the python interpreter when it processes the first lineit associates the text "hello python world!with the variable message when it reaches the second lineit prints the value associated with message to the screen let' expand on this program by modifying hello_world py to print second message add blank line to hello_world pyand then add two new lines of codemessage "hello python world!print(messagemessage "hello python crash course world!print(message