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Select the true statements about the sqirte3 module. (Select two answers.)
1. The sqlite3 module in python provides an interface compliant to the DB-API 2.0. Thus, it follows a standard performance metric that allows for consistency in database programming with python.
2. The special name 'memory' is used to create a database in RAM using the sqlite3 module. Thus, when you use it as the name of the database file while opening a connection, it creates a temporary database that exists only in memory.
Which sentence about the property decorator is false?
The@propertydecorator should be defined after the method that is responsible for setting an encapsulated attribute is a false sentence. In fact, the@propertydecorator should be defined before the method that is used to set the attribute value. The@propertydecorator and the setter and deleter methods work together to create an encapsulated attribute, which is used to provide control over the attribute's value.
Official Python documentation on Property:https://docs.python.org/3/library/functions.html#property
The@propertydecorator is used to designate a method as a getter for an instance attribute. The method decorated with@propertyshould be defined before any setter or deleter methods for the same attribute.
In the JSON processing context, the term serialization:
In the JSON processing context, the term serialization: A. names a process in which Python data is turned into a JSON string.
Serialization refers to the process of converting a data object, such as a Python object, into a format that can be easily transferred over a network or stored in a file. In the case of JSON, serialization refers to converting Python data into a string representation using the JSON format. This string can be sent over a network or stored as a file, and later deserialized back into the original Python data object.
Select the true statement about composition
Composition is an object-oriented design concept that models ahas-a relationship. In composition, a class known ascompositecontains an object of another class known ascomponent.In other words, a composite class has a component of another class1.
1. Composition allows a class to be projected as a container of different classes.
Composition is a concept in Python that allows for building complex objects out of simpler objects, by aggregating one or more objects of another class as attributes. The objects that are aggregated are generally considered to be parts of the whole object, and the containing object is often viewed as a container for the smaller objects.
In composition, objects are combined in a way that allows for greater flexibility and modifiability than what inheritance can offer. With composition, it is possible to create new objects by combining existing objects, by using a container object to host other objects. By contrast, with inheritance, new objects extend the behavior of their parent classes, and are limited by that inheritance hierarchy.
Official Python documentation on Composition:https://docs.python.org/3/tutorial/classes.html#composition
GeeksforGeeks article on Composition vs Inheritance:https://www.geeksforgeeks.org/composition-vs-inheritance-python/
Real Python article on Composition and Inheritance:https://realpython.com/inheritance-composition-python/
Select the true statements related to PEP 8 programming recommendations for code writing. (Select two answers:)
The two true statements related to PEP 8 programming recommendations for code writing areOption BandOption D.
Option B is true because PEP 8 recommends making object type comparisons using theisinstance()method instead of comparing types directly1.
Option D is true because PEP 8 recommends not writing string literals that rely on significant trailing whitespaces as they may be visually indistinguishable, and certain editors may trim them1.
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