In Python, which keyword is used to define a metaclass within a class definition?
- classfor
- classmeta
- metaclass
- metaclassof
To define a metaclass within a class definition in Python, you use the keyword metaclass. This keyword specifies the metaclass for the class, allowing you to customize how the class is created and behaves.
In Python, _____ is a special method used to overload the ‘+’ operator for custom objects.
- add
- overload
- plus
- sum
In Python, the __add__ method is used to overload the + operator for custom objects. This allows you to define custom behavior when two objects of your class are added together using the + operator.
In Python, a ____ is a file containing Python definitions and statements intended for use in other Python programs.
- library
- module
- package
- script
In Python, a module is a file containing Python definitions and statements. These modules are intended for use in other Python programs to organize code into reusable components.
In Python, a ____ is a function that wraps another function, modifying its behavior.
- class
- decorator
- generator
- module
In Python, a decorator is a function that wraps another function, allowing you to modify or extend its behavior without changing its source code. Decorators are commonly used for tasks such as adding logging, authentication, or caching to functions.
In Python, a metaclass is a subclass of _____.
- class
- function
- object
- type
In Python, a metaclass is a class that defines the behavior of other classes. It is always a subclass of the built-in type class. A metaclass is responsible for creating and initializing new classes.
In Python, how do you define a method inside a class to access and modify the objects’ attributes?
- def method(self):
- function method():
- method = def():
- self.method = function():
In Python, to define a method inside a class that can access and modify object attributes, you use the def method(self): syntax. The self parameter allows you to access and manipulate the object's attributes within the method.
In Python, if you don’t specify a metaclass for a new class, it will implicitly use ____ as its metaclass.
- base
- metaclass
- object
- type
In Python, if you don't specify a metaclass for a new class, it will implicitly use type as its metaclass. type is the default metaclass for all classes unless otherwise specified.
In Python, strings are ____, meaning they cannot be changed after they are created.
- constant
- dynamic
- immutable
- mutable
In Python, strings are immutable, which means their content cannot be changed after they are created. If you want to modify a string, you create a new one. This immutability is a fundamental characteristic of Python strings.
In Python, the ____ keyword is used to define a generator function.
- def
- gen
- generator
- yield
In Python, the yield keyword is used to define a generator function. A generator function produces a sequence of values using the yield statement and can be paused and resumed during execution, allowing for efficient iteration over large data sets.
In Python, the ____ method is used to get the number of elements in a set.
- count()
- len()
- length()
- size()
In Python, the len() function is used to get the number of elements in various data structures, including sets. It returns the length or size of the set.