Python Core | VoidX Academy

19. Python PIP

Tooling

Python PIP

PIP is a package manager for Python packages, or modules if you like. If you have Python version 3.4 or later, PIP is included by default.

A package contains all the files you need for a module. Modules are Python code libraries you can include in your project. PIP allows you to download, install, and manage these third-party packages effortlessly from the Python Package Index (PyPI).

Checking if PIP is Installed

Navigate to your command line (Command Prompt, Terminal, or Bash) and type the following command to check if PIP is installed and to see its version.

pip --version

Terminal Outputpip 23.0.1 from /usr/lib/python3/dist-packages/pip (python 3.11)

If you see a version number, PIP is ready to use. If you get a "command not found" error, you may need to use pip3 --version instead, depending on your operating system setup.

Installing a Package

Downloading a package is incredibly easy. Open your command line interface and tell PIP to download the package you want by using the install command.

Let's install a popular package called camelcase, which provides a method to capitalize the first letter of every word.

pip install camelcase

Terminal OutputCollecting camelcase Downloading camelcase-0.2.tar.gz (1.3 kB) Installing collected packages: camelcase Successfully installed camelcase-0.2

Using a Package

Once the package is installed, it is ready to use in your Python scripts. You import it exactly the same way you import Python's built-in modules.

# Import the package we just installed via PIP
import camelcase

# Create an instance of the CamelCase class
c = camelcase.CamelCase()

txt = "hello world! learning python is fun."

# Use the package's method
print(c.hump(txt))

OutputHello World! Learning Python Is Fun.

Listing Packages

Over time, you will install many packages. Use the list command in your terminal to see all the packages currently installed on your system or in your environment.

pip list

Terminal OutputPackage Version ---------- ------- camelcase 0.2 pip 23.0.1 setuptools 66.1.1

Uninstalling a Package

If you no longer need a package, you can cleanly remove it using the uninstall command. PIP will ask you to confirm before proceeding.

pip uninstall camelcase

Terminal OutputFound existing installation: camelcase 0.2 Uninstalling camelcase-0.2: Would remove: /usr/lib/python3.11/site-packages/camelcase-0.2.dist-info/* /usr/lib/python3.11/site-packages/camelcase/* Proceed (Y/n)? Y Successfully uninstalled camelcase-0.2

💡Best Practice: When working on professional projects, you rarely install packages globally on your computer. Instead, you create isolated spaces called Virtual Environments (like venv) and run pip install inside them to keep project dependencies from clashing.

19. Python PIP

Tooling

Python PIP

PIP is a package manager for Python packages, or modules if you like. If you have Python version 3.4 or later, PIP is included by default.

Checking if PIP is Installed

Navigate to your command line (Command Prompt, Terminal, or Bash) and type the following command to check if PIP is installed and to see its version.

pip --version

Terminal Outputpip 23.0.1 from /usr/lib/python3/dist-packages/pip (python 3.11)

If you see a version number, PIP is ready to use. If you get a "command not found" error, you may need to use pip3 --version instead, depending on your operating system setup.

Installing a Package

Downloading a package is incredibly easy. Open your command line interface and tell PIP to download the package you want by using the install command.

Let's install a popular package called camelcase, which provides a method to capitalize the first letter of every word.

pip install camelcase

Terminal OutputCollecting camelcase Downloading camelcase-0.2.tar.gz (1.3 kB) Installing collected packages: camelcase Successfully installed camelcase-0.2

Using a Package

Once the package is installed, it is ready to use in your Python scripts. You import it exactly the same way you import Python's built-in modules.

# Import the package we just installed via PIP
import camelcase

# Create an instance of the CamelCase class
c = camelcase.CamelCase()

txt = "hello world! learning python is fun."

# Use the package's method
print(c.hump(txt))

OutputHello World! Learning Python Is Fun.

Listing Packages

Over time, you will install many packages. Use the list command in your terminal to see all the packages currently installed on your system or in your environment.

pip list

Terminal OutputPackage Version ---------- ------- camelcase 0.2 pip 23.0.1 setuptools 66.1.1

Uninstalling a Package

If you no longer need a package, you can cleanly remove it using the uninstall command. PIP will ask you to confirm before proceeding.

pip uninstall camelcase

19. Python PIP

Python PIP

Checking if PIP is Installed

Installing a Package

Using a Package

Listing Packages

Uninstalling a Package

Knowledge Check

19. Python PIP

Python PIP

Checking if PIP is Installed

Installing a Package

Using a Package

Listing Packages

Uninstalling a Package

Knowledge Check