Machine Learning - Python
MCQS
A. Dennis Ritchie
B. Linus Torvalds
C. Guido van Rossum
D. Larry Page
Guido van Rossum is the creator of Python.
A. 1989
B. 1991
C. 1993
D. 1995
Python was first released in 1991.
A. Web development
B. Scripting
C. System programming
D. Educational purposes
Python was created by Guido van Rossum for educational purposes.
A. Static typing
B. Readability
C. High-level data structures
D. Extensive standard library
Python is dynamically typed, not statically typed.
A. A type of snake
B. A character from a TV show
C. A type of programming language
D. A place name
Guido van Rossum named Python after the British comedy series "Monty Python's Flying Circus."
A. Google
B. Microsoft
C. Facebook
D. Python Software Foundation
Python is maintained by the Python Software Foundation.
A. Addition of f-strings
B. Introduction of list comprehensions
C. Removal of print statement ambiguity
D. Introduction of print() function
Python 3 removed the ambiguity of the print statement by making it a function.
A. Django
B. Flask
C. NumPy
D. All of the above
Django, Flask, and NumPy are all significant contributions from the open-source community to Python's development.
A. Python 1.x
B. Python 2.x
C. Python 3.x
D. Python 4.x
Python 3.x introduced significant backward-incompatible changes compared to Python 2.x.
A. C
B. Perl
C. Java
D. ABC
Python was influenced by ABC, a language designed for teaching programming concepts.
A. It follows the waterfall model
B. It encourages community contributions
C. It is open-source
D. It follows a release cycle
Python's development model is not based on the waterfall model; it's more iterative and community-driven.
A. Web development
B. Data analysis
C. System administration
D. Automation
Python was originally developed for automation tasks and to enable interaction with the operating system.
A. Perl
B. ABC
C. Java
D. C
Guido van Rossum was inspired by ABC, a language designed for teaching programming concepts.
A. Python 2.6
B. Python 2.7
C. Python 2.8
D. Python 2.9
Python 2.7 marked the end-of-life for Python 2.
A. Python 1.0
B. Python 2.0
C. Python 2.3
D. Python 3.0
List comprehensions were introduced in Python 2.0.
A. Readability counts
B. Beautiful is better than ugly
C. Explicit is better than implicit
D. Performance is paramount
Performance is considered important in Python, but it's not paramount over other design principles.
A. Adding new features
B. Improving performance
C. Backward compatibility
D. Enhancing security
The major focus during the 2.x series was maintaining backward compatibility with previous versions.
A. Asynchronous programming
B. Type hints
C. Enumerations
D. Data classes
Asynchronous programming was introduced in Python 3.5.
A. HelloHelloHello
B. Hello Hello Hello
C. 9
D. Hello3
The '*' operator repeats the string 'Hello' three times, resulting in 'HelloHelloHello'.
A. To enforce strict typing
B. To improve performance
C. To enhance code readability
D. To aid code analysis tools
Type hints were introduced to aid code analysis tools and improve code readability, not to enforce strict typing.
A. Python 2.6
B. Python 2.7
C. Python 3.0
D. Python 3.4
The 'with' statement was introduced in Python 2.5 but gained prominence in Python 2.6 and later versions.
A. It defines the Python language syntax
B. It introduces type hints
C. It outlines the Zen of Python
D. It provides guidelines for code style
PEP 20 is known as "The Zen of Python" and provides guiding principles for writing Python code.
A. Python 3.7
B. Python 3.8
C. Python 3.9
D. Python 3.10
The 'walrus' operator (':=') was introduced in Python 3.8.
A. Adding new features
B. Improving performance
C. Backward compatibility
D. Removing legacy features
The major focus during the 3.x series was maintaining backward compatibility while adding new features.
A. To improve performance
B. To address design flaws
C. To add new features
D. To increase popularity
Python 3 was created to address design flaws and inconsistencies in Python 2 and to clean up the language.
A. Python 3.5
B. Python 3.6
C. Python 3.7
D. Python 3.8
The 'async' and 'await' keywords were introduced in Python 3.5 for asynchronous programming.
A. Strongly typed
B. Dynamically typed
C. Statically typed
D. Weakly typed
Python is dynamically typed, meaning variable types are determined at runtime.
A. Minimal indentation
B. Use of obscure syntax
C. Clear and readable syntax
D. Encouragement of code obfuscation
Python emphasizes clear and readable syntax, making it easier to understand and maintain code.
A. It reduces file size
B. It enforces code style guidelines
C. It improves performance
D. It eliminates the need for comments
Python uses indentation to enforce code blocks, improving readability and maintaining consistent code style.
A. "Simple is better than complex"
B. "Complexity is preferred over simplicity"
C. "Simplicity should be avoided"
D. "Simplicity is irrelevant"
Python's philosophy emphasizes simplicity, as stated in "The Zen of Python."
A. Static typing
B. Strong typing
C. Dynamic typing
D. Explicit typing
Python's dynamic typing allows variables to change data types as needed during execution.
A. Array
B. List
C. Tuple
D. Dictionary
Arrays are not built-in types in Python; lists, tuples, and dictionaries are built-in data structures.
A. Reducing the need for third-party libraries
B. Ensuring compatibility with other languages
C. Enhancing code execution speed
D. Simplifying code development tasks
Python's extensive standard library provides a wide range of modules and tools, reducing reliance on third-party libraries.
A. Int
B. Float
C. Complex
D. Double
Double is not a standard data type in Python; it uses float for floating-point numbers.
A. Emphasizing speed over readability
B. Prioritizing compilation over execution
C. Favoring execution speed over memory usage
D. Focusing on readability over speed
Python prioritizes readability and ease of development over raw execution speed.
A. Use of semicolons to end statements
B. Use of explicit type declarations
C. Minimal use of brackets and punctuation
D. Use of explicit line continuation
Python's syntax minimizes the use of brackets and punctuation, making code more concise and readable.
A. They offer better memory management
B. They are platform-dependent
C. They simplify complex data operations
D. They improve code execution speed
Python's high-level data structures simplify complex data operations, making code more efficient and readable.
A. It enforces strict coding standards
B. It provides guidelines for code optimization
C. It encourages community contributions
D. It mandates backward compatibility
The PEP process allows the Python community to propose and discuss changes to the language, fostering innovation.
A. It lacks support for OOP concepts
B. It offers limited support for OOP
C. It fully supports OOP principles
D. It prefers procedural programming
Python fully supports object-oriented programming principles, including classes, inheritance, and encapsulation.
A. It facilitates code reuse
B. It increases code complexity
C. It enforces strict coding standards
D. It eliminates the need for testing
Python's extensive standard library facilitates code reuse by providing pre-built modules for various tasks.
A. Web development
B. Data analysis
C. Code optimization
D. Providing reusable modules
Python's standard library focuses on providing a wide range of reusable modules for various programming tasks.
A. To represent absence of a value
B. To represent a placeholder value
C. To terminate program execution
D. To indicate an error condition
Python's 'None' object is used to represent the absence of a value or as a placeholder.
A. Its support for low-level optimization
B. Its extensive standard library
C. Its compatibility with proprietary software
D. Its dynamic typing system
Python's extensive standard library, including libraries like NumPy and TensorFlow, contributes to its popularity in data science and ML.
A. It contributes to code optimization
B. It ensures backward compatibility
C. It promotes diversity in coding styles
D. It drives innovation in the language
Python's global community drives innovation and contributes to its ongoing development through discussions and contributions.
A. Its extensive standard library
B. Its strict syntax rules
C. Its strong emphasis on performance
D. Its preference for compiled languages
Python's extensive standard library provides pre-built modules for various tasks, accelerating development and prototyping.
A. Interpreted execution
B. Integration with C extensions
C. Static typing
D. Code obfuscation
Python's integration with C extensions allows developers to interact with other languages and systems seamlessly.
A. It enhances code performance
B. It facilitates code reuse
C. It enforces strict coding standards
D. It simplifies code development
Python's modular architecture facilitates code reuse by allowing developers to organize code into reusable modules.
A. Use of excessive indentation
B. Lack of whitespace
C. Minimal use of punctuation
D. Complex syntax rules
Python's minimal use of punctuation and clear syntax contribute to its readability.
A. Its extensive support for low-level optimization
B. Its built-in web server
C. Its compatibility with web browsers
D. Its integration with web frameworks
Python's integration with web frameworks like Django and Flask makes it suitable for developing web applications.
A. Encouraging the use of complex syntax
B. Prioritizing raw execution speed
C. Eliminating the need for documentation
D. Making code self-explanatory
Python's design philosophy aims to make code self-explanatory, reducing the need for excessive documentation.
A. Using the official Python installer
B. Using a package manager like pip
C. Using Anaconda
D. Using Chocolatey
While pip is used to install Python packages, it is not used to install Python itself on Windows.
A. It improves code readability
B. It isolates project dependencies
C. It speeds up code execution
D. It enforces strict coding standards
Virtual environments help manage project dependencies, ensuring that each project has its own isolated set of libraries and dependencies.
A. python --version
B. python -v
C. version(python)
D. version()
The command python --version or python -V is used to check the installed Python version in the command line interface.
A. To install Python itself
B. To manage Python environments and dependencies
C. To execute Python scripts
D. To debug Python code
Pip is a package manager for Python used to install, manage, and update Python packages and their dependencies.
A. Eclipse
B. Visual Studio Code (VSCode)
C. NetBeans
D. IntelliJ IDEA
Visual Studio Code (VSCode) is a lightweight, open-source IDE developed specifically for Python development among other languages.
A. To create virtual environments for Python projects
B. To install Python packages
C. To execute Python scripts
D. To debug Python code
The 'venv' module in Python is used to create virtual environments, allowing developers to manage project dependencies and isolate environments.
A. Using the official Python installer
B. Using Homebrew
C. Using MacPorts
D. Using Anaconda
While Anaconda is a popular Python distribution, it is not typically used as the primary method to install Python on macOS.
A. pip install package_name
B. install package_name
C. python install package_name
D. pkg install package_name
The command pip install package_name is used to install Python packages using pip.
A. To write Python code
B. To compile Python code
C. To execute Python code
D. To debug Python code
The Python interpreter is used to execute Python code, translating it into machine-readable bytecode and executing it.
A. create venv
B. python venv
C. venv create
D. python -m venv env_name
The command python -m venv env_name is used to create a virtual environment named 'env_name' using the 'venv' module.
A. Syntax highlighting
B. Version control integration
C. Code compilation
D. Debugging tools
While some IDEs support code compilation, it is not a universal feature.
A. To list project dependencies
B. To execute Python scripts
C. To write Python code
D. To store Python documentation
The 'requirements.txt' file is used to list project dependencies, allowing others to easily install the same dependencies for the project.
A. Python interpreter
B. Project-specific dependencies
C. Standard Python libraries
D. System-wide Python packages
Python virtual environments are isolated from system-wide packages, including the Python interpreter and standard libraries.
A. To list Python packages
B. To execute Python scripts
C. To debug Python code
D. To compile Python code
PyPI is the official repository for Python packages, allowing developers to share and distribute their Python packages.
A. activate
B. source activate
C. activate.bat
D. venv activate
On Windows, the activate.bat script is used to activate a virtual environment in the command prompt.
A. Enhanced code navigation
B. Lightweight and minimalistic design
C. Limited plugin support
D. No syntax highlighting
IDEs typically offer enhanced features such as code navigation, debugging tools, and integrated version control compared to text editors.
A. To uninstall Python packages
B. To display a list of installed Python packages
C. To compile Python code
D. To debug Python code
The 'pip freeze' command displays a list of installed Python packages, including their version numbers.
A. To manage Python environments
B. To install Python packages
C. To execute Python scripts
D. To write Python code
Virtual environments in Python are used to manage project dependencies and isolate project environments.
A. deactivate
B. source deactivate
C. deactivate.env
D. venv deactivate
The deactivate command is used to deactivate a virtual environment in Python on macOS and Linux.
A. Automated dependency management
B. Improved code readability
C. Enhanced code execution speed
D. Simplified debugging process
Package managers like Homebrew and Chocolatey automate the process of installing and managing dependencies, simplifying Python installation.
A. To store Python code
B. To list project dependencies
C. To execute Python scripts
D. To write Python documentation
The 'requirements.txt' file is used to list project dependencies, facilitating easy installation of dependencies for others.
A. Platform independence
B. Reduced functionality
C. Limited compatibility
D. Increased code complexity
The 'venv' module is a built-in feature of Python, providing a platform-independent way to create virtual environments.
A. Enhanced productivity
B. Limited customization
C. Slow code execution
D. Dependency on an internet connection
IDEs like PyCharm and VSCode offer enhanced productivity through features like code completion, debugging tools, and version control integration.
A. Using the official Python installer
B. Using the package manager of your Linux distribution
C. Using Snap packages
D. Using the AUR (Arch User Repository)
While using the official Python installer is possible, it's generally not the recommended way to install Python on Linux.
A. .py
B. .txt
C. .pyc
D. .exe
Python scripts typically have the extension .py.
A. python script.py
B. execute script.py
C. run script.py
D. start script.py
The command 'python script.py' is used to execute a Python script from the command line.
A. To execute Python scripts
B. To write and test Python code interactively
C. To debug Python code
D. To compile Python code
The Python interactive shell (REPL) allows users to write and test Python code interactively, line by line.
A. //
B. /* */
C. #
D.
The '#' symbol is used to indicate comments in Python.
A. 16
B. 26
C. 13
D. 11
Python follows the order of operations (PEMDAS/BODMAS), so multiplication is performed before addition.
A. print("Hello, world!")
B. display("Hello, world!")
C. log("Hello, world!")
D. output("Hello, world!")
The 'print()' function is used to display output in Python.
A. Python is fun
B. Python + is fun
C. Pythonis fun
D. Python + " is fun"
The '+' operator concatenates strings in Python.
A. x = 10
B. 10 = x
C. x : 10
D. 10 : x
In Python, variables are assigned values using the '=' operator.
A. Integer
B. Float
C. String
D. Boolean
The value assigned to 'x' contains a decimal point, so 'x' will be of type float.
A. my_var
B. 2var
C. _var
D. Var
Variable names cannot start with a digit in Python.
A. 3
B. 3.5
C. 4
D. 3
The '//' operator performs integer division in Python, discarding the fractional part.
A. 'Hello, world!'
B. "Hello, world!"
C. '''Hello, world!'''
D. All of the above
All of the given options represent valid strings in Python.
A. P
B. y
C. t
D. h
Python uses zero-based indexing, so the character at index 2 in the string "Python" is 't'.
A. 6
B. 7
C. 5
D. 10
The 'len()' function returns the length of the string, which is 6 characters in "Python".
A. string_var = "Python"
B. string_var = 'Python'
C. string_var = """Python"""
D. All of the above
All of the given options are valid ways to declare strings in Python.
A. 1
B. 2
C. 3
D. 0
The '%' operator calculates the remainder of division, so 10 divided by 3 leaves a remainder of 1.
A. int("10")
B. "10".to_int()
C. to_int("10")
D. All of the above
The 'int()' function can be used to convert a string to an integer in Python.
A. Pyt
B. yth
C. Pth
D. Pyt
Slicing in Python starts from the first index (inclusive) and goes up to, but does not include, the second index (exclusive), so it will print characters from index 1 to 3.
A. read()
B. input()
C. get_input()
D. user_input()
The 'input()' function is used to read input from the user in Python.
A. Python
B. nohtyP
C. nthoP
D. nhtyP
A negative step in slicing causes the string to be reversed, so it will print the string "Python" in reverse order.
A. Pto
B. Ptoh
C. yh
D. y
A step of 2 in slicing selects every second character of the string, so it will print every second character of "Python".
A. str1 + str2
B. str1 .concat(str2)
C. str1 * 3 + str2
D. str1 , str2
The '.' operator is not used for string concatenation in Python.
A. 5
B. x
C. 0
D. None
After assigning the value 5 to the variable 'x', printing 'x' will output 5.
A. x = "10"
B. x = 10
C. x == 10
D. 10 = x
The correct syntax to assign a value of 10 to the variable 'x' is 'x = 10'.