Python Interview Questions Your Guide to Success
Python is one of the most sought-after skills in the tech industry, making it a popular choice for interviews. Whether you're applying for a software developer, data analyst, or machine learning role, being prepared is key. Jobpe helps you excel in Python job interviews with curated questions, real-world scenarios, and expert answers.
python
- Python Programming
What is Python and why is it popular?
Python is a high-level, interpreted programming language known for its simplicity, readability, and broad...
What are Python’s key data types?
Common data types include int, float, str (string), bool (boolean), list, tuple, set, and dictionary.
How do you write a comment in Python?
Using `#` for single-line comments. Multi-line comments can be done with triple quotes `''' ... '''` or `""" ... """`.
What is a function in Python?
A reusable block of code defined with the `def` keyword that performs a specific task and can optionally return a value.
How do you declare a variable in Python?
By simply assigning a value to a name, e.g., `x = 10`. Python is dynamically typed, so no explicit type declaration...
Explain the difference between lists and tuples.
Lists are mutable (can be changed), while tuples are immutable (cannot be changed after creation). Tuples can be...
What are Python decorators and how are they used?
Decorators are functions that modify the behavior of other functions or methods. They are applied using the...
How does Python handle memory management?
Python uses a private heap space to store objects and data structures. It has an automatic garbage collector that...
What is the difference between `*args` and `**kwargs` in function definitions?
`*args` allows passing a variable number of positional arguments, while `**kwargs` allows passing a variable number...
Explain list comprehensions with an example.
A concise way to create lists. Example: `[x * 2 for x in range(5)]` produces `[0, 2, 4, 6, 8]`.
What is the Global Interpreter Lock (GIL) in Python?
The GIL is a mutex that protects access to Python objects, preventing multiple native threads from executing Python...
Explain generators and the `yield` keyword.
Generators are iterators that yield values one at a time and maintain state between yields, allowing efficient...
What are metaclasses in Python?
Metaclasses define the behavior of classes themselves (classes of classes). They control class creation and can be...
How does Python’s exception handling work?
Using `try`, `except`, `else`, and `finally` blocks, Python allows catching and handling runtime errors to maintain...
Describe the differences between multiprocessing and threading in Python.
Threading runs multiple threads in the same process sharing memory but limited by GIL, while multiprocessing runs...
Python Programming
What is Python and why is it popular?
Python is a high-level, interpreted programming language known for its simplicity, readability, and broad applicability in web development, data science, automation, and more.
What are Python’s key data types?
Common data types include int, float, str (string), bool (boolean), list, tuple, set, and dictionary.
How do you write a comment in Python?
Using `#` for single-line comments. Multi-line comments can be done with triple quotes `''' ... '''` or `""" ... """`.
What is a function in Python?
A reusable block of code defined with the `def` keyword that performs a specific task and can optionally return a value.
How do you declare a variable in Python?
By simply assigning a value to a name, e.g., `x = 10`. Python is dynamically typed, so no explicit type declaration is required.
Explain the difference between lists and tuples.
Lists are mutable (can be changed), while tuples are immutable (cannot be changed after creation). Tuples can be used as keys in dictionaries, lists cannot.
What are Python decorators and how are they used?
Decorators are functions that modify the behavior of other functions or methods. They are applied using the `@decorator_name` syntax above a function definition.
How does Python handle memory management?
Python uses a private heap space to store objects and data structures. It has an automatic garbage collector that recycles unused memory.
What is the difference between `*args` and `**kwargs` in function definitions?
`*args` allows passing a variable number of positional arguments, while `**kwargs` allows passing a variable number of keyword arguments.
Explain list comprehensions with an example.
A concise way to create lists. Example: `[x * 2 for x in range(5)]` produces `[0, 2, 4, 6, 8]`.
What is the Global Interpreter Lock (GIL) in Python?
The GIL is a mutex that protects access to Python objects, preventing multiple native threads from executing Python bytecodes at once, which affects multi-threading performance.
Explain generators and the `yield` keyword.
Generators are iterators that yield values one at a time and maintain state between yields, allowing efficient iteration over large datasets without loading everything into memory.
What are metaclasses in Python?
Metaclasses define the behavior of classes themselves (classes of classes). They control class creation and can be used to customize class behavior dynamically.
How does Python’s exception handling work?
Using `try`, `except`, `else`, and `finally` blocks, Python allows catching and handling runtime errors to maintain program flow and perform cleanup.
Describe the differences between multiprocessing and threading in Python.
Threading runs multiple threads in the same process sharing memory but limited by GIL, while multiprocessing runs separate processes with independent memory, enabling true parallelism.
