Hi, I am trying to store some information with regards to books into an object. My object class codes are as below:
class Book:
def __init__(self,Title,Author,BookID):
self.Title=Title
self.Author=Author
self.BookID=BookID
def __repr__(self):
return "Book()"
def __str__(self,Title,Author,BookID):
return Title,Author,BookIDMy Other Codes Are class Node:
def __init__(self, data):
self.data = data
self.next = None
class Book:
def __init__(self,Title,Author,BookID):
self.Title=Title
self.Author=Author
self.BookID=BookID
def __repr__(self):
return "Book()"
def __str__(self,Title,Author,BookID):
return Title,Author,BookID
class LinkedList:
def __init__(self):
self.head = None
self.size=0
# Defining the method to print the linked list
def DisplayBook(self):
temp = self.head
while temp:
print (temp.data)
temp = temp.next
def AddBookToFront(self, data): #AddBookToFront
new_node = Node(data)
# 3. Make next of new Node as head
new_node.next = self.head
# 4. Move the head to point to new Node
self.head = new_node
self.size+=1
def RemoveBookAtPosition(self,position):
# If linked list is empty
if self.head == None:
return
# Store head node
temp = self.head
# If head needs to be removed
if position == 0:
head = temp.next
temp = None
return
# Find previous node of the node to be deleted
for i in range(position -1 ):
temp = temp.next
if temp is None:
break
# If position is more than number of nodes
if temp is None:
return
if temp.next is None:
return
# Node temp.next is the node to be deleted
# store pointer to the next of node to be deleted
next = temp.next.next
# Unlink the node from linked list
temp.next = None
temp.next = next
def AddBookAtPosition(self,data,position):
if(position==0):
newnode=Node(data)
newnode.next=self.head
self.head=newnode
elif(position>self.size):
print("\n\nIndex is out of range\n\n")
elif(position==self.size):
self.AddBookToFront(data)
else:
current=self.head
count=0
while(current!=None):
if(count==position-2):
break
else:
count+=1
current=current.next
newnode=Node(data)
newnode.next=current.next
current.next=newnode
def AddBookAtPosition(self,data,position):
if(position==0):
newnode=Node(data)
newnode.next=self.head
self.head=newnode
elif(position>self.size):
print("\n\nIndex is out of range\n\n")
elif(position==self.size):
self.AddBookToFront(data)
else:
current=self.head
count=0
while(current!=None):
if(count==position-2):
break
else:
count+=1
current=current.next
newnode=Node(data)
newnode.next=current.next
current.next=newnode
# Defining function which will merge two linked lists
def mergeLists(l1, l2):
temp = None
if l1 is None:
return l2
if l2 is None:
return l1
if l1.data <= l2.data:
temp = l1
temp.next = mergeLists(l1.next, l2)
else:
temp = l2
temp.next = mergeLists(l1, l2.next)
return temp
# Defining function which will sort the linked list using mergeSort
def mergeSort(head):
if head is None or head.next is None:
return head
l1, l2 = divideLists(head)
l1 = mergeSort(l1)
l2 = mergeSort(l2)
head = mergeLists(l1, l2)
return head
# Defining function which will divide a linked list into two equal linked lists
def divideLists(head):
slow = head # slow is a pointer to reach the mid of linked list
fast = head # fast is a pointer to reach the end of the linked list
if fast:
fast = fast.next
while fast:
fast = fast.next # fast is incremented twice while slow is incremented once per loop
if fast:
fast = fast.next
slow = slow.next
mid = slow.next
slow.next = None
return head, midThe Error Output That I Am Getting is as below:Error:Traceback (most recent call last):
File "C:\Users\TP_baseline\Desktop\DSAG\ProjectTest8-2.py", line 143, in <module>
ll.DisplayBook()
File "C:\Users\TP_baseline\Desktop\DSAG\ProjectTest8-2.py", line 25, in DisplayBook
print (temp.data)
TypeError: __str__() missing 3 required positional arguments: 'Title', 'Author', and 'BookID'