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What do these lines print?>>> class User:>>> id = 89>>> name = "no name">>> __password = None>>> >>> def __init__(self, new_name=None):>>> self.is_new = True>>> if new_name is not None:>>> self.name = new_name>>> >>> u = User()>>> u.is_newis_newNothingFalseTrue

Question

What do these lines print?>>> class User:>>> id = 89>>> name = "no name">>> __password = None>>> >>> def init(self, new_name=None):>>> self.is_new = True>>> if new_name is not None:>>> self.name = new_name>>> >>> u = User()>>> u.is_newis_newNothingFalseTrue

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Solution

The code you provided is written in Python. It defines a class User with some attributes and a constructor method. Then, it creates an instance of the User class and tries to access the is_new attribute of the instance.

Here's a step-by-step explanation:

  1. class User: This line defines a new class named User.

  2. id = 89, name = "no name", __password = None These lines define class attributes. id and name are public, while __password is private due to the double underscore prefix.

  3. def __init__(self, new_name=None): This line defines the constructor of the class. It takes an optional argument new_name. If new_name is not provided, it defaults to None.

  4. self.is_new = True This line sets the instance attribute is_new to True for every new instance of the class.

  5. if new_name is not None: self.name = new_name This block of code checks if new_name is not None. If it's not, it sets the instance attribute name to new_name.

  6. u = User() This line creates a new instance of the User class and assigns it to the variable u. Since no argument is provided, new_name is None and name remains "no name".

  7. u.is_new This line accesses the is_new attribute of the u instance. Since is_new was set to True in the constructor, it will print True.

This problem has been solved

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