The process of visiting all the nodes of a tree and performing an operation (such as a print operation) is called ____.
- Pruning
- Rotating
- Sorting
- Traversal
The process of visiting all the nodes of a tree and performing an operation is known as tree traversal. Tree traversal is essential for various tree-based algorithms and operations like printing the contents of a tree.
To concatenate two tuples, you can use the ____ operator.
- -
- &
- *
- +
In Python, you can concatenate two tuples using the + operator. The + operator is used for concatenating sequences, including tuples. For example, tuple1 + tuple2 will combine the elements of both tuples.
To convert a list into a set in Python, you can pass the list to the ____ constructor.
- dict()
- list()
- set()
- tuple()
To convert a list into a set in Python, you can use the set() constructor. It takes an iterable, such as a list, as an argument and creates a new set containing the unique elements from the list.
To create a new URL pattern in a Django app, you have to add it to the ____ file.
- models.py
- settings.py
- urls.py
- views.py
In Django, you create new URL patterns by adding them to the urls.py file of your app. This file maps URLs to view functions, allowing you to define the routing of your web application.
To debug Python scripts, you can use the ____ module to set breakpoints and inspect variable values.
- debug
- inspect
- pdb
- testing
In Python, the pdb module is used for debugging. It allows you to set breakpoints, step through code, and inspect variable values during program execution.
To define a generator, you use the ____ keyword in the function definition.
- break
- continue
- return
- yield
In Python, to define a generator, you use the yield keyword within a function. A generator function produces an iterator, which can be used to generate a sequence of values lazily, conserving memory and improving performance.
To define a metaclass, you generally override the _____ method to customize class creation.
- class
- init
- metaclass
- new
To define a metaclass, you generally override the __new__ method. This method is responsible for creating the class itself and can be customized to modify class attributes and behavior during creation.
To enable database migrations in Flask, the ____ extension can be used.
- Flask-Database
- Flask-Migrate
- Flask-ORM
- Flask-SQLAlchemy
To enable database migrations in Flask, the Flask-Migrate extension is used. Flask-Migrate is an extension that integrates the Alembic database migration framework with Flask applications, allowing you to manage database schema changes easily.
To find the shortest path in a graph with non-negative edge weights, the ____ algorithm can be used.
- Binary
- Bubble
- Dijkstra's
- Quick
To find the shortest path in a graph with non-negative edge weights, you can use Dijkstra's algorithm. This algorithm efficiently calculates the shortest path from a source vertex to all other vertices in a weighted graph.
To get all the keys from a Python dictionary, you can use the ____ method.
- get()
- items()
- keys()
- values()
To obtain all the keys from a Python dictionary, you should use the keys() method. This method returns a view object that displays a list of all the keys in the dictionary.