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Python Packages MCQ for Data Science Interview Preparation
Which statement correctly describes Python packages?
a. A package groups together multiple modules
b. A package is not allowed to have any modules inside it
c. Packages must be imported in a particular sequence
d. You can name packages in any way you like
Option a – A package groups together multiple modules
Why are packages used in Python programming?
a. To help organize and manage code efficiently
b. To make the code run faster
c. To extend Python with new features
d. To build user interface components
Option a – To help organize and manage code efficiently
What role does the init.py file play within a Python package?
a. Marks the folder as a Python package
b. Executes startup code when the package is loaded
c. Stores the package’s documentation
d. Enables the package to be imported
Option a – Marks the folder as a Python package
Which one of these is a built-in Python package?
a. numpy
b. matplotlib
c. math
d. pandas
Option c – math
Which package is typically used for scientific calculations in Python?
a. numpy
b. matplotlib
c. math
d. pandas
Option a – numpy
What happens when you run the command “pip install package_name”?
a. Downloads and installs the package from the Python Package Index (PyPI)
b. Creates a new Python package with the given name
c. Removes an installed package
d. Updates an installed package to its newest version
Option a – Downloads and installs the package from the Python Package Index (PyPI)
How can you view a list of installed packages along with their versions in Python?
a. pkg show
b. pip show
c. package list
d. pip list
Option d – pip list
Which of the following is not included by default in Python’s standard library?
a. os
b. sys
c. requests
d. datetime
Option c – requests
What is the primary use of the requests package in Python?
a. To interact with websites and retrieve data
b. To perform math-related operations
c. To create graphs and visualizations
d. To handle database communication
Option a – To interact with websites and retrieve data
What command is used to remove a Python package via pip?
a. pip uninstall package_name
b. pip remove package_name
c. pip delete package_name
d. pip deactivate package_name
Option a – pip uninstall package_name
Which Python package is widely used for data manipulation and analysis?
a. pandas
b. numpy
c. matplotlib
d. scipy
Option a – pandas
What does the command “pip freeze” display?
a. A snapshot of all installed packages and their exact versions
b. Stops the execution of a Python script
c. Deletes all installed packages
d. Uninstalls a specified package
Option a – A snapshot of all installed packages and their exact versions
How do you install a particular version of a Python package using pip?
a. pip install package_name==version_number
b. pip install version_number package_name
c. pip install package_name -v version_number
d. pip install -v package_name/version_number
Option a – pip install package_name==version_number
Which package is most commonly used for creating plots and charts in Python?
a. numpy
b. pandas
c. matplotlib
d. scipy
Option c – matplotlib
What is the effect of the statement “from package_name import *”?
a. Imports all public functions and classes from the package
b. Imports a specific function or class from the package
c. Imports every sub-package within the package
d. Imports the package itself without its contents
Option a – Imports all public functions and classes from the package
Which Python library is frequently used for extracting data from websites?
a. beautifulsoup
b. scrapPy
c. requests
d. selenium
Option a – beautifulsoup
What is the function of the command “pip install –upgrade pip”?
a. Updates the pip tool to the newest version
b. Updates all installed Python packages
c. Removes the pip tool from the system
d. Downgrades pip to an earlier version
Option a – Updates the pip tool to the newest version
How do you specify a custom package index URL when installing a package using pip?
a. pip install package_name –index https://example.com
b. pip install package_name –source https://example.com
c. pip install package_name –repository https://example.com
d. pip install package_name –from https://example.com
Option a – pip install package_name –index https://example.com
Which library is widely used in Python for building deep learning models?
a. tensorflow
b. keras
c. pytorch
d. scikit-learn
Option a – tensorflow
What does running “pip install -e” accomplish?
a. Installs a package in editable mode from the local directory
b. Creates and installs a new package with a given name
c. Moves the current package to a different location
d. Runs the main script of the package
Option a – Installs a package in editable mode from the local directory
How do you create a new Python virtual environment with the built-in venv module?
a. python -m venv environment_name
b. venv create environment_name
c. virtualenv environment_name
d. python -m virtualenv environment_name
Option a – python -m venv environment_name
Which Python package is commonly used for database interaction with SQL databases?
a. sqlite3
b. sqlalchemy
c. pyodbc
d. mysql-connector-python
Option b – sqlalchemy
Which library is primarily used to make HTTP requests in Python?
a. requests
b. urlib
c. http.client
d. httplib2
Option a – requests
What is the correct way to install packages system-wide using pip?
a. sudo pip install package_name
b. pip install package_name -g
c. pip install package_name –global
d. pip install package_name –system
Option a – sudo pip install package_name
Which Python module is used to convert Python objects to and from byte streams?
a. json
b. pickle
c. Xml
d. csv
Option b – pickle
Which package provides tools to work with regular expressions in Python?
a. re
b. regeX
c. pcre
d. regexp
Option a – re
Which package helps you access and interact with the operating system?
a. os
b. sys
c. pathlib
d. subprocess
Option a – os
How would you install a package from a local source distribution file using pip?
a. pip install package_name.tar.gz
b. pip install package_name.git
c. pip install package_name.zip
d. pip install package_name.whl
Option a – pip install package_name.tar.gz
Which Python library is popular for creating visual representations of data?
a. matplotlib
b. seaborn
c. plotly
d. bokeh
Option a – matplotlib
What happens when you run the command “pip install –no-deps package_name”?
a. Installs the package but skips installing its dependencies
b. Does not perform any installation
c. Removes all existing dependencies related to the package
d. Forces all dependencies of the package to be installed
Option a – Installs the package but skips installing its dependencies
How do you install a package directly from a version control repository using pip?
a. pip install package_name.git
b. pip install package_name –git https://github.com/username/repo.git
c. pip install package_name –repo https://github.com/username/repo.git
d. pip install package_name –version-control https://github.com/username/repo.git
Option b – pip install package_name –git https://github.com/username/repo.git
Which Python library is frequently used for image processing tasks?
a. PIL
b. OpenCV
c. Matplotlib
d. scikit-image
Option a – PIL
What is the effect of using “pip install package_name>=version_number”?
a. Installs the package ensuring the version is at least the specified one
b. Installs the package only if the version is below the specified number
c. Updates the package to the newest available version, if there is one
d. Removes versions of the package that are equal to or newer than the specified version
Option a – Installs the package ensuring the version is at least the specified one
How can you add a directory to the Python module search path on a Windows system?
a. Set the PYTHONPATH environment variable accordingly
b. Modify the sys.path list during program execution
c. Change Windows registry settings to include the path
d. Copy the package folder into the Python installation directory
Option a – Set the PYTHONPATH environment variable accordingly
What does the command “pip install –pre package_name” accomplish?
a. Installs the newest available pre-release version of the package
b. Deletes all pre-release versions of the package from the system
c. Downloads the documentation for pre-release versions
d. Installs the package along with experimental pre-release features
Option a – Installs the newest available pre-release version of the package
Which command lists all Python packages installed via pip?
a. pip list
b. pip show
c. pip search
d. pip info
Option a – pip list
Which Python package is used for parsing and handling XML data?
a. xml
b. xml.etree
c. xml.dom
d. xmlrpc
Option b – xml.etree
What does the command “pip install –no-binary package_name” do?
a. Installs the package from the source code rather than a pre-built binary
b. Prevents the use of any binary packages during the installation
c. Deletes the binary distribution of the package from your system
d. Forces pip to install binary versions, ignoring source code
Option a – Installs the package from the source code rather than a pre-built binary
How do you install a Python package using a wheel (.whl) file?
a. pip install package_name.whl
b. pip install package_name
c. pip install package_name –wheel
d. pip install package_name –file package_name.whl
Option a – pip install package_name.whl
Which Python library is commonly utilized for handling CSV files?
a. csv
b. pandas
c. openpyxl
d. numpy
Option a – csv
What role does the init.py file play in a Python package?
a. Defines attributes applicable to the whole package
b. Specifies the version of the package
c. Adds external modules to the package
d. Executes initialization code when the package is imported
Option d – Executes initialization code when the package is imported
How can you add a subpackage within an existing Python package?
a. By creating a new folder inside the main package directory
b. By running a command like “create subpackage packagename subpackagename”
c. By selecting “New Subpackage” in the development environment
d. By executing “python add subpackage packagename subpackagename”
Option a – By creating a new folder inside the main package directory
Which syntax is correct for importing a module from a subpackage?
a. from packagename.subpackagename import module
b. import module from packagename.subpackagename
c. packagename.subpackagename.module
d. import packagename.subpackagename.module
Option a – from packagename.subpackagename import module
What is the proper way to completely uninstall a package from your Python setup?
a. Manually delete the package folder
b. Run an uninstall command for the package
c. Use the pip command to remove the package
d. Execute “python delete package packagename” command
Option a – Manually delete the package folder
Why does a Python package have a pycache folder?
a. It holds compiled bytecode files to speed up imports
b. It stores documentation related to the package
c. It contains configuration files for the package
d. It keeps backup copies of the package files
Option a – It holds compiled bytecode files to speed up imports
How do you upgrade a package to a specific version using pip?
a. Use “pip upgrade packagename==version”
b. Use “upgrade packagename version” command
c. Use “pip install packagename==version”
d. Use “pip update packagename==version”
Option c – Use “pip install packagename==version”
What purpose does the all variable serve inside a module or package?
a. It specifies which functions/classes are imported by default
b. It indicates the module/package version
c. It restricts which elements get imported when using “import *”
d. It controls the debugging mode for the module/package
Option c – It restricts which elements get imported when using “import *”
How can you import just one module from a package without loading others?
a. import packagename
b. from packagename import module
c. include packagename.module
d. import packagename.module
Option b – from packagename import module
How do you check where a Python package is installed?
a. Run “pip show packagename”
b. Use “python show package packagename”
c. Import the package and check its path attribute
d. Use a “show packagename path” command
Option a – Run “pip show packagename”
How do you install a package from a local .tar.gz archive?
a. Use “pip install package.tar.gz”
b. Use “install package.targz” command
c. Use “pip add package.tar.gz”
d. Use “pip extract package.targz”
Option a – Use “pip install package.tar.gz”
Why is the __main__.py file used in a Python module?
a. It holds the primary logic of the module
b. It defines the version details of the module
c. It allows linking to other external modules
d. It executes specific code when the module gets imported
Option d – It executes specific code when the module gets imported
What is the correct way to import a module using a relative import?
a. from package import module
b. import package.module
c. package.module
d. import package.module
Option a – from package import module
Why is the __main__.py file important in a package?
a. It serves as the main logic container for the package
b. It acts as the package’s starting point when executed
c. It helps include third-party modules within the package
d. It runs setup code when the package is run directly
Option b – It acts as the package’s starting point when executed
Which command helps in building a distributable Python package?
a. python create package package_name
b. python setup.py sdist
c. python build package package_name
d. python distribute package package_name
Option b – python setup.py sdist
What role does setup.py play in a Python package?
a. It defines the package version
b. It adds external libraries to the package
c. It specifies custom attributes for the package
d. It manages how the package is built and its dependencies
Option d – It manages how the package is built and its dependencies
How can you install a Python distribution package?
a. python install package package_name
b. python setup.py install
c. python add package package_name
d. python distribute package package_name
Option b – python setup.py install
What does the MANIFEST.in file do in a Python distribution?
a. It sets the version of the package
b. It includes third-party code in the package
c. It lists extra files or folders to be packaged
d. It sets rules for building and managing dependencies
Option c – It lists extra files or folders to be packaged
Which command is used to generate a Python wheel package?
a. python wheel package package_name
b. python create wheel package_name
c. python setup.py bdist_wheel
d. python build wheel package_name
Option c – python setup.py bdist_wheel
Why is a Python wheel package used?
a. It provides a ready-to-install archive for Python libraries
b. It helps include external modules in the package
c. It defines the version of the library
d. It manages package configuration and requirements
Option a – It provides a ready-to-install archive for Python libraries
How do you install a .whl (wheel) file in Python?
a. python install wheel package name
b. python setup.py install_wheel
c. python add wheel package name
d. pip install package_name.whl
Option d – pip install package_name.whl
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