Error when calling class constructor with Python in Vscode

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class CircularlyLinkedList:    def __init__(self):        self.tail = None        self.size = 0..

When I ran the above code and entered

ls1 = CirculralyLinkedList()

An error occurred: An expression must come after '('.

This error did not occur when running with IDLE.

If I need to type something after '(', please tell me what to type.