minute minute// in python integer division functions much more as you would expect if you entered the expression on calculator expressions an expression is combination of valuesvariablesand operators value all by itself is considered an expressionand so is variableso the following are all legal expressions (assuming that the variable has been assigned value) if you type an expression in interactive modethe interpreter evaluates it and displays the result but in scriptan expression all by itself doesn' do anythingthis is common source of confusion for beginners exercise type the following statements in the python interpreter to see what they do order of operations when more than one operator appears in an expressionthe order of evaluation depends on the rules of precedence for mathematical operatorspython follows mathematical convention the acronym pemdas is useful way to remember the rulesparentheses have the highest precedence and can be used to force an expression to evaluate in the order you want since expressions in parentheses are evaluated first ( - is and ( + )**( - is you can also use parentheses to make an expression easier to readas in (minute even if it doesn' change the result