In the context of method overriding, what is the role of the super() function?
- It calls the base class constructor
- It calls the derived class constructor
- It invokes the parent class method
- It's used to create a new instance of the class
The super() function is used to invoke the method of the parent class. It's commonly used in method overriding to call the parent class's method while adding or modifying functionality in the derived class method.
The file _______ allows you to organize related modules into a single directory hierarchy.
- __init__.py
- __main__.py
- __module__.py
- __package__.py
The file __init__.py is a special Python file used to create packages. It allows you to organize related modules into a single directory hierarchy, and it is executed when the package is imported. It's essential for defining package-level variables, functions, or initialization code.
You have a list of numbers and you want to compute the sum of all positive numbers only. Which control structure can be most beneficial to achieve this?
- Conditional Statement
- For Loop
- List Comprehension
- While Loop
To compute the sum of all positive numbers in a list, a conditional statement can be most beneficial. You can iterate through the list of numbers and use a conditional statement to check if each number is positive before adding it to the sum. This allows you to selectively sum the positive numbers in the list.
In scenarios where JSON data keys are not simple strings, the json module's _______ argument can be utilized to handle non-string keys.
- ensure_ascii
- indent
- key_transform
- sort_keys
In scenarios where JSON data keys are not simple strings, the key_transform argument of the json module can be utilized to handle non-string keys by providing a custom function for key transformation.
Which built-in Python module provides mathematical functions?
- calculations
- math
- mathematics
- numbers
The 'math' module is a built-in Python module that provides a wide range of mathematical functions, such as trigonometric, logarithmic, and exponential functions.
What is the result of the intersection operation between two sets?
- A set containing all elements common to both sets
- A set containing all elements in either set
- A set containing elements unique to the first set
- An empty set
The intersection operation between two sets in Python returns a new set containing all elements that are common to both sets. If there are no common elements, it returns an empty set.
The method _______ is automatically invoked when an attribute's value is retrieved.
- call
- get
- init
- str
In Python, the __get__ method is automatically invoked when an attribute's value is retrieved using dot notation.
The philosophy of Python is summarized in a document referred to as?
- PEP Manifesto
- Python Manifesto
- Pythonic Principles
- Zen of Python
The philosophy of Python is famously summarized in the "Zen of Python" (PEP 20). It's a collection of guiding aphorisms for writing computer programs in Python, providing insights into the design principles and philosophy behind the language.
If my_list = [10, 20, 30, 40], what does the expression my_list[-2::-2] evaluate to?
- [20, 10]
- [30, 10]
- [40, 20]
- [40, 30]
The expression my_list[-2::-2] starts at the second-to-last element of the list (which is 30), and it then steps backward by 2 positions, so it selects every second element in reverse order. Therefore, the result is [20, 10].
The pass statement in Python is essentially a _______ operation, meaning it doesn't perform any action.
- Break
- Continue
- Halt
- No-op
The 'pass' statement is a no-op or a no-operation statement. It is used as a placeholder when syntactically required but no action is desired. It doesn't perform any operation.