Core Python Programming Concepts Flashcards
7 cards from real POC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Core Python Programming Concepts flashcards as text
Which of the following correctly defines a class method in Python?
Answer: Using the @classmethod decorator with cls as first parameter
A class method is defined with `@classmethod` and receives the class itself (conventionally named `cls`) as its first argument.
What is the output of `'abc' * 3`?
Answer: 'abcabcabc'
String repetition with `*` concatenates the string the specified number of times, producing 'abcabcabc'.
What does `dict.get(key, default)` return when the key is absent?
Answer: Returns the default value
`dict.get(key, default)` returns the default value you specify if the key is not found, avoiding a KeyError.
Which Python keyword is used to define an anonymous function?
Answer: lambda
The `lambda` keyword creates a small anonymous function that can have any number of arguments but only one expression.
What is the purpose of the `nonlocal` keyword?
Answer: It allows an inner function to modify a variable in an enclosing (non-global) scope
`nonlocal` lets a nested function read and write a variable defined in the nearest enclosing function scope that isn't global.
What is the result of `set([1, 2, 2, 3, 3, 3])`?
Answer: {1, 2, 3}
Converting a list to a set removes all duplicate values, leaving only unique elements.
Which statement about Python decorators is true?
Answer: A decorator is a function that takes a function and returns a modified function
A decorator is a higher-order function that wraps another function, extending or altering its behavior without modifying its source.