Number of Students Unable to Eat Lunch.py

class Solution(object):
    def countStudents(self, students, sandwiches):
        """
        :type students: List[int]
        :type sandwiches: List[int]
        :rtype: int
        """
        while sandwiches:
            if sandwiches[0] in students:
                students.remove(sandwiches[0])
                sandwiches.pop(0)
            else:
                break
        return len(sandwiches)