6. A school stores records of Class XII students using a list that contains multiple lists as its elements.

 A school stores records of Class XII students using a list that contains multiple lists as its elements. The structure of each such element is [Student_Name, Marks, MainSubject]. Crate user-defined functions to perform the operations as mentioned below:

(a) Push_student(): To push the Student_Name and Marks of all those students, who have Science as MainSubject, into a Stack StudentInfo

(b) Pop_student(): To delete all items (one at a time) from the stack StudentInfo in LIFO order and display them. Also display "Empty Stack" when there are no items remaining in the stack.

For Example:

If the stored information is:

[['Akansha',98,"Mathematics"],["Priti",96,"Science"],["Garima",99,"Science"],["Ayushi",78,"English"]]

The stack should contain:

[['Priti', 96], ['Garima', 99]]

The output should be:

["Garima",99]

["Priti",96]

Empty Stack

Solution:

def Push_student():

    for S in L:

        if S[2]=="Science":

            StudentInfo.append([S[0],S[1]])

    print(StudentInfo)

    

def Pop_student():

    while StudentInfo!=[]:

        print(StudentInfo.pop())

    else:

        print("Stack is Empty")

Push_student()

Pop_student()