a deque is a type of collection, but it is not automatically available when you open IDLE. What is missing that allows you to use the deque class?

Entering key dates from your course syllabi test and quiz dates, assignments due dates in your planner can you manage your schedule by allowing you to see commitments ahead of time.

Python write an expression that executes the loop body as long as the user enters a non-negative number. note: if the submitted code has an infinite loop, the system will stop running the code after a few seconds and report "program end never reached." the system doesn't print the test case that caused the reported message. sample outputs with inputs: 9 5 2 -1

Which of the following examples has four beats in each measure?