evaluating boolean operators look at line again while cave !' and cave !' 'the condition has two parts connected by the and boolean operator the condition is true only if both parts are true the first time the while statement' condition is checkedcave is set to the blank string'the blank string is not equal to the string ' 'so the left side evaluates to true the blank string is also not equal to the string ' 'so the right side evaluates to true so the condition then turns into true and true because both values are truethe condition finally evaluates to true so the program execution enters the while-block this is what the evaluation looks like (if the value of cave is the blank string)while cave !' and cave !' ' while '!' and cave !' ' while true and cave !' ' while true and '!' ' while true and truev while truegetting the player' input while cave !' and cave !' 'print('which cave will you go into( or )'cave input(line asks the player which cave they choose line lets the player type the response and hit enter this response is stored in cave after this code is executedthe execution loops back to the top of the while statement and rechecks the condition if the player typed in or then cave will either be ' or ' (since input(always returns stringsthis makes the condition falseand the program execution will continue past the while loop for exampleif the user entered ' then the evaluation would look like this