once we have got to the end of the statementwe need to do one last check if the stack is emptythen we are fine and we can return true but if the stack is not emptythen we have some opening bracket which does not have matching closing bracket and we shall return false we can test the bracket-matcher with the following little codesl "{(foo)(bar)}[hello](((this)is) )test""{(foo)(bar)}[hello](((this)is)atest""{(foo)(bar)}[hello](((this)is) )test))for in slm check_brackets(sprint("{}{}format(sm)only the first of the three statements should match and when we run the codewe get the following outputtruefalsefalse the code works in summarythe push and pop operations of the stack data structure attract ( the stack data structure is simply enough but is used to implement whole range of functionality in the real world the back and forward buttons on the browser are made possible by stacks to be able to have undo and redo functionality in word processorsstacks are also used