Python Q&A
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- What is Python?
A high-level, interpreted programming language known for its readability and versatility. - What are Python’s built-in data types?
int, float, str, list, tuple, set, dict, and bool. - What is the difference between append() and extend()?
append() adds an item to the end of a list; extend() adds items from an iterable. - What is a function in Python?
A block of code that performs a specific task and can be reused. - What is a lambda function?
An anonymous function defined with the lambda keyword. - What are control flow statements?
Statements that dictate the flow of execution (e.g., if, for, while). - What is list comprehension?
A concise way to create lists using a single line of code. - What is the purpose of the break statement?
To exit the nearest enclosing loop. - What is function overriding?
Redefining a method in a derived class. - What is a default argument?
A parameter that assumes a default value if no argument is passed. - What is scope in Python?
The visibility of variables in certain parts of the code (local, global, and nonlocal). - What is a module?
A file containing Python code (functions, classes, variables) that can be imported. - What is a package?
A directory that contains multiple modules and an __init__.py file. - What is the purpose of import?
To bring modules or packages into the current namespace. - What is an exception?
An error that occurs during program execution. - What is the purpose of the try and except blocks?
To catch and handle exceptions gracefully. - What is the difference between raise and assert?
raise triggers an exception; assert tests a condition and raises an AssertionError if false. - What is a custom exception?
A user-defined exception class that extends the base Exception class. - What is file handling in Python?
The process of reading from and writing to files using Python’s built-in functions. - What is with statement?
A context manager that automatically handles resource management, such as file closing. - What is OOP?
Object-Oriented Programming, a paradigm based on objects that combine data and functionality. - What are the four pillars of OOP?
Encapsulation, inheritance, polymorphism, and abstraction. - What is a decorator?
A function that modifies the behavior of another function or method. - What is a generator?
A special type of iterator that generates values on the fly using the yield statement. - What is multithreading?
A technique that allows multiple threads to run concurrently within a single process. - What is multiprocessing?
A technique that allows multiple processes to run simultaneously, taking advantage of multiple CPU cores. - What is a REST API?
An architectural style for designing networked applications that use HTTP requests. - What is JSON?
A lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate. - What is web scraping?
The process of extracting data from websites using code. - What is a virtual environment?
A self-contained directory that contains a Python installation for a particular version of Python, used to manage project dependencies. - What are the benefits of using Python?
Readability, versatility, large community support, and a rich set of libraries. - What are Python’s limitations?
Slower execution speed compared to compiled languages, higher memory consumption, and not suitable for mobile app development. - What is dynamic typing?
The type of a variable is determined at runtime, allowing for more flexibility. - What is the difference between shallow copy and deep copy?
A shallow copy creates a new object but inserts references into it; a deep copy creates a new object and recursively copies all nested objects. - What is Pythonic code?
Code that follows the idioms and conventions of the Python language. - What is metaprogramming?
Writing programs that manipulate or generate code at runtime. - What is the purpose of super()?
To call a method from the parent class. - What are class methods?
Methods that receive the class as the first argument instead of an instance. - What are static methods?
Methods that do not receive an implicit first argument and can be called on the class itself. - What is a proxy?
A design pattern that provides a surrogate or placeholder for another object. - What is a singleton?
A design pattern that restricts the instantiation of a class to one object. - What is duck typing?
A concept that determines an object’s suitability based on its methods and properties rather than its type. - What is the difference between == and is?
== checks for value equality; is checks for identity (same object). - What is a callable in Python?
An object that can be called like a function (e.g., functions, methods, classes). - What is the purpose of the return statement?
To exit a function and optionally pass back an expression to the caller.
