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How To Install Python3-pip on Ubuntu 20.04.1 LTS Desktop

Ubuntu 11

In this article, we will walk you through the process of installing python3-pip on Ubuntu 20.04.1 LTS Desktop. The pip tool is a package manager for Python, which is used to install and manage software packages written in Python.

Quick Answer

To install python3-pip on Ubuntu 20.04.1 LTS Desktop, you need to enable the Universe repository, update the package database, set Python 3 as the default version, and then install python3-pip using the apt command.

Prerequisites

Before we begin, you need to have administrative access to an Ubuntu 20.04.1 LTS Desktop system. You should also have a basic understanding of the terminal and command-line interface.

Step 1: Enable the Universe Repository

Ubuntu’s Universe repository contains a vast collection of free and open-source software maintained by the Ubuntu community. To enable it, open the terminal and type the following command:

sudo add-apt-repository universe

The sudo command allows you to run the command as a superuser, or root user. The add-apt-repository command adds a new repository to your system’s software sources.

Step 2: Update the Package Database

Next, update your package database to ensure you have the latest information about the software packages you can install. To do this, run the following command:

sudo apt update

The apt command is a powerful command-line tool used for handling packages in Ubuntu and other Linux distributions.

Step 3: Set Python 3 as the Default Version

Ubuntu 20.04.1 LTS comes with both Python 2 and Python 3 pre-installed. To ensure that Python 3 is the default version, use the update-alternatives command:

sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.8 20

Here, --install is used to create a new symbolic link group. /usr/bin/python is the master link, python is the link’s group name, /usr/bin/python3.8 is the slave link, and 20 is the priority for this slave link.

You can verify that Python 3 is now the default version by running:

python --version

The output should show Python 3.x.x.

Step 4: Install python3-pip

Finally, install python3-pip by running:

sudo apt install python3-pip

This command installs the python3-pip package, which allows you to use pip with Python 3.

Conclusion

Congratulations! You have successfully installed python3-pip on your Ubuntu 20.04.1 LTS Desktop. You can now use pip to install and manage your Python packages.

If you encounter any issues, make sure you have performed sudo apt update before attempting to install packages. Additionally, check if the package python-is-python3 is installed. If not, you can install it using sudo apt install python-is-python3. This package helps ensure that python points to python3 by default.

Remember, it is important to always update your package database (sudo apt update) before installing or modifying packages to avoid potential issues. Happy coding!

For more information about Python, you can visit the official Python website. For more details on using pip, check out the official pip documentation.

How do I check the version of Python installed on my Ubuntu system?

To check the version of Python installed on your Ubuntu system, open the terminal and type python --version. This command will display the installed version of Python.

Can I install multiple versions of Python on Ubuntu?

Yes, it is possible to install multiple versions of Python on Ubuntu. You can use tools like pyenv or conda to manage multiple Python installations and switch between them.

How do I upgrade `pip` to the latest version?

To upgrade pip to the latest version, use the following command: python -m pip install --upgrade pip. This command will update pip to the latest available version.

Can I use `pip` to install packages globally on Ubuntu?

Yes, pip can be used to install packages globally on Ubuntu. However, it is recommended to create and use virtual environments to isolate project dependencies and avoid conflicts between different packages.

How do I create a virtual environment using `pip`?

To create a virtual environment using pip, you can use the venv module. Open the terminal and navigate to the desired directory. Then, run the following command: python3 -m venv myenv. This will create a new virtual environment named myenv in the current directory.

How do I activate a virtual environment?

To activate a virtual environment, navigate to the directory where the virtual environment is located and run the following command: source myenv/bin/activate. This will activate the virtual environment, and you will see the environment name (myenv) in your terminal prompt.

How do I deactivate a virtual environment?

To deactivate a virtual environment, simply run the deactivate command in your terminal. This will restore your system’s default Python environment.

Can I install packages from a requirements.txt file using `pip`?

Yes, you can install packages from a requirements.txt file using pip. Navigate to the directory where the requirements.txt file is located and run the following command: pip install -r requirements.txt. This will install all the packages listed in the file.

How do I uninstall a package installed with `pip`?

To uninstall a package installed with pip, use the following command: pip uninstall package_name. Replace package_name with the name of the package you want to uninstall.

How do I upgrade a specific package installed with `pip`?

To upgrade a specific package installed with pip, use the following command: pip install --upgrade package_name. Replace package_name with the name of the package you want to upgrade.

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