leetcode python syntax error reversed linked list

Question

I'm trying to write a reversed linked list on leet code and I keep getting a `Syntax error on line 37: print(curr.data, end=" ") I don't get what the problem is. my code is running just fine on vs code. does anyone know what to do?

class Node:    
    def __init__(self, data):
        self.data = data
        self.next = None


def create_linked_list():
    nums = input("Enter numbers (space-separated): ").split()
    if not nums:
        return None

    head = Node(int(nums[0]))
    curr = head

    for num in nums[1:]:
        new_node = Node(int(num))
        curr.next = new_node
        curr = curr.next

    return head


def reverse_linked_list(head):
    prev = None
    curr = head

    while curr:
        next_node = curr.next
        curr.next = prev
        prev = curr
        curr = next_node

    return prev


def display_linked_list(head):
    curr = head

    while curr:
        print(curr.data, end=" ")
        curr = curr.next

    print()


head = create_linked_list()

print("Original linked list:")
display_linked_list(head)


head = reverse_linked_list(head)


print("Reversed linked list:")
display_linked_list(head)

Answer 1

You would get this syntax error if you posted your code having selected "Python" as language (which is backed by a Python 2.7 compiler), instead of "Python3".

The syntax print(curr.data, end=" ") is not compatible with Python 2, where print is not a function, but a statement. To do the same in Python 2, you would do:

    print curr.val,

(Note that LeetCode defines a ListNode class with a val attribute, not data).

In short, don't choose "Python" in the LeetCode UI, but "Python3".