A Python function to find students missing the daily set exercise requirement.
In a specific school, students are mandated to check-in at least twice daily on one of the four exercise-tracking machines located on the premises. Daily reports from these machines include a list of students who have checked in. Your task is to write a Python function that identifies students who have checked in less than the mandated two times for that day. ### Parameters - `lst` (list): A list of strings containing names of students who checked in during the day. ### Return Value - Returns a list containing the names of students who have not met the minimum requirement of two check-ins. ### Examples ```python # Students John Green and Betty White have checked in at least two times, but Annie Black only checked in once solution(['John Green', 'Annie Black', 'John Green', 'Betty White', 'Betty White', 'John Green']) # Returns: ['Annie Black'] # Jack Blue checked-in twice, but Tom Red and Hannah Purple only checked in once solution(['Tom Red', 'Jack Blue', 'Jack Blue', 'Hannah Purple']) # Returns: ['Tom Red', 'Hannah Purple'] ```