this is for Python and can you explain what the code is doing with comments and test case you DONT use any of the list methods (append, pop etc.). class mystack():     def __init__(self, m = 10):         self.maxsize = m         self.TOP = -1         self.array = [None]*m          def push(self, item):          # Inserts item at the top of the stack and returns True. If unable to insert the item returns false                  #######################################################################         # Remove the pass statement and write your code         #######################################################################         pass     def pop(self):         # Removes the item from the top of the stack and returns it. For unsuccessful pop return False                  #######################################################################         # Remove the pass statement and write your code         #######################################################################         pass          def peek(self):         # Returns the item at the top of the stack without removing it from the stack. If stack is empty return false.                  #######################################################################         # Remove the pass statement and write your code         #######################################################################         pass          def isempty(self):         # Returns true when stack is empty else returns false                  #######################################################################         # Remove the pass statement and write your code         #######################################################################         pass     def isfull(self):         # Returns true when stack is full else returns false                  #######################################################################         # Remove the pass statement and write your code         #######################################################################         pass     def get_size(self):         # Returns the size of the stack and for empty stack returns 0                  #######################################################################         # Remove the pass statement and write your code         #######################################################################         pass

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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this is for Python and can you explain what the code is doing with comments and test case you DONT use any of the list methods (append, pop etc.).

class mystack():
    def __init__(self, m = 10):
        self.maxsize = m
        self.TOP = -1
        self.array = [None]*m
    
    def push(self, item): 
        # Inserts item at the top of the stack and returns True. If unable to insert the item returns false
        
        #######################################################################
        # Remove the pass statement and write your code
        #######################################################################
        pass

    def pop(self):
        # Removes the item from the top of the stack and returns it. For unsuccessful pop return False
        
        #######################################################################
        # Remove the pass statement and write your code
        #######################################################################
        pass
    
    def peek(self):
        # Returns the item at the top of the stack without removing it from the stack. If stack is empty return false.
        
        #######################################################################
        # Remove the pass statement and write your code
        #######################################################################
        pass
    
    def isempty(self):
        # Returns true when stack is empty else returns false
        
        #######################################################################
        # Remove the pass statement and write your code
        #######################################################################
        pass

    def isfull(self):
        # Returns true when stack is full else returns false
        
        #######################################################################
        # Remove the pass statement and write your code
        #######################################################################
        pass

    def get_size(self):
        # Returns the size of the stack and for empty stack returns 0
        
        #######################################################################
        # Remove the pass statement and write your code
        #######################################################################
        pass

 

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