number "whilekeyword loop test while number < colon print(numbernumber + print('done!' we will start by looking at what we have done to the test the test itself is number < which is python expression that evaluates to booleantrue or false we precede the test expression with the python keyword "whilethis is what tells python that there' loop coming it must be directly followed by an expression that evaluates to boolean we follow the test expression with colon this is the marker that the expression is over and must be the last element on the line note that the test evaluates to true for the loop to be run and false for the loop to quit we are testing for "shall the loop keep goingnot "shall the loop stoppython tests for whilenot until