Step | Action |
---|---|
Update system package list |
sudo apt update |
Check if Python 2.7 is installed |
python --version |
If not, install python 2.7 |
sudo apt install python2.7 |
Download get-pip.py script |
wget https://bootstrap.pypa.io/get-pip.py |
Run get-pip.py script with python2.7 |
sudo python2.7 get-pip.py |
Check pip version for Python 2.7 |
pip2.7 --version |
Now let’s dive a bit deeper into the procedure.
– First, you need to make sure your Ubuntu software repositories are up-to-date. Run the command
sudo apt update
.
– Ubuntu 20.04 comes pre-installed with Python3 by default. So we will check if Python 2.7 is installed using the command
python --version
.
– If Python 2.7 isn’t present, you need to install it via the terminal by typing
sudo apt install python2.7
.
– The other thing you’ll need to install is `pip`, which allows you to manage and install additional libraries that aren’t part of the Python standard library. You’ll need to download the get-pip.py script to your local machine, which can be done through `wget`. Use this command:
wget https://bootstrap.pypa.io/get-pip.py
to fetch the script.
– Now, you have everything required to install pip for Python 2.7. Run the fetched get-pip.py script with Python 2.7 using the command
sudo python2.7 get-pip.py
.
– To ensure `pip` was correctly installed for Python 2.7, check its version using
pip2.7 --version
. It should display the version number and additionally specify ‘python 2.7’ in the output.
These commands allow you to easily switch between different Python versions, giving you versatility and control when managing your Python development environments, catering to the requirement of “How Can I Install Pip For Python2.7 In Ubuntu 20.04”.Python Package Index (Pip) has become an integral part of every Python programmer’s toolkit. It’s worth noting that Pip is the package installer for Python. It essentially serves as a standard package manager for Python, facilitating the installation and management of software packages written in Python.
Here comes the critical question. How can you install Pip specifically for Python2.7 on the latest Ubuntu 20.04? Below are the step-by-step instructions:
• First, open up your terminal. You can do this by either searching for the terminal in your system’s search bar or by pressing ‘Ctrl+Alt+T’.
The next lines of commands will be executed in the terminal.
– Check if Python2.7 is already installed in your system using:
python2.7 --version
If not, you need to install it first.
– Install Python2.7 using the command:
sudo apt-get install python2.7
• Once done, the next logical step would be to install the Pip package associated with Python2.7.
– The primary command to install Pip for Python2.7 is:
sudo apt-get install python-pip
To ensure everything runs smoothly, here still are some checks to make:
– After successful execution, cross-verify the installation by running:
pip --version
If you see an output with Python 2.7 mentioned in it, then congratulations — you’ve successfully installed Pip for Python2.7 on Ubuntu 20.04!
Do remember that these steps are ergonomically designed so that you aren’t baffled during the journey, rather embellishing your programming toolkit piece by piece! Noteworthy is the fact that even though Python development has ceased for version 2.7, it still holds immeasurable applications due to which this guide abides in relevance. For comprehensive information, refer to Python2.7 official documentation.
Given a scenario where you want to perform a soft installation without modifying system files, there’s an option to use virtual environments (
virtualenv
). A virtual environment helps you isolate the Python and Pip versions from system-wide installed versions. To create one, follow these steps:
– Make sure you have installed the `virtualenv` package. If not, run:
sudo apt install virtualenv
– Create a new Python 2.7 virtual environment:
virtualenv -p /usr/bin/python2.7 venv
– Activate the environment:
source venv/bin/activate
Once activated, any packages you install using pip are installed into this isolated environment, preventing potential conflicts with system-wide packages.
Pip plays a vital role in our efforts to master Python. It empowers us to incorporate a colossal number of third-party libraries that Python developers have made available—further equipping the powerful language of Python!
Ubuntu 20.04, known as Focal Fossa, represents a significant departure from previous versions of Ubuntu in several ways. Most notably for Python developers, Ubuntu 20.04 has officially phased out support for Python 2.7 and now features Python 3.8 as the default version.
This move aligns with the larger trend in the Python community to transition away from Python 2.x after it reached its date of End-Of-Life (EOL) on January 1, 2020 (Python 2 EOL countdown).
The deprecation of Python 2.7 likewise impacts associated packages and tools, such as pip—the package installer for Python—which no longer supports Python 2.7 in versions post pip 21. Barring a few workarounds, these changes represent a series of challenges that developers will have to navigate when working with legacy Python codebases on Ubuntu 20.04.
To install pip for Python2.7 on Ubuntu 20.04 despite the challenges represented by defaulting to Python 3.8, you can perform the following steps:
-
First, download the version of python that you want. You can do so using the wget command with your chosen version urls taken from Python Release Page. For example,
wget https://www.python.org/ftp/python/2.7.18/Python-2.7.18.tgz
-
Then extract and go inside the downloaded file directory. This guide uses tar to extract:
tar xzf Python-2.7.18.tgz cd Python-2.7.18
-
Before building Python, ensure that the necessary set of build dependencies are installed on your machine:
sudo apt-get update sudo apt-get upgrade sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev
-
Now you can configure and make build to prepare for installation:
./configure --enable-optimizations make
-
Once built successfully, you can now install this version of Python:
sudo make altinstall
-
About Pip, As pip has dropped support for Python 2.7 since version 21, we must install an older version through the get-pip.py script:
curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output get-pip.py sudo python2 get-pip.py
Now, you have Python 2.7 and pip installed side by side with the existing version of Python 3.8 (the system’s Python) in Ubuntu 20.04 LTS which allows for working on projects that still rely on the deprecated version of Python.
Depending on your development needs, you may want to use virtual environments (venv or virtualenv) to isolate your Python 2.7 environment and further manage its packages.
Benefits of this method: |
---|
All commands are terminal based, minimizing system overhead and maximizing compatibility and control. |
By manually downloading, extracting, and installing Python and pip, you know exactly where everything is installed, which can be helpful for troubleshooting purposes. |
You can maintain the newer Python 3.8 on your system for all system related functionalities and other projects. |
You can operate multiple versions of python independently, which helps avoid potential conflicts between different project requirements. |
However, a little caution here, continuously patching old versions could lead to security vulnerabilities. It is recommended to eventually align your projects with the current active versions of language/tools for more long term stability.
It’s important to note that Python 2.7 is no longer officially supported as of January 1st, 2020 (Python). You might face some difficulties in getting updates and resolving dependencies for pip on Python 2.7, especially on a newer OS version like Ubuntu 20.04 which has migrated mostly towards Python 3 compliance.
However, it’s completely plausible that you could be working on a legacy project or constraints that still need Python 2.7, so let’s talk about how you can install pip for Python 2.7 on Ubuntu 20.04, along with the pros and cons of doing so.
How to Install Pip for Python2.7 on Ubuntu 20.04
The following are the commands used for installing ‘pip’ for Python 2.7 in Ubuntu 20.04:
sudo apt update sudo apt install python2 curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output get-pip.py sudo python2 get-pip.py
The above commands first update your package list and then install Python 2. After downloading the pip installer suitable for Python 2.7 using the curl command, we execute this downloaded python file using the Python2 interpreter to install pip.
Pros of Installing Pip for Python2.7:
- Legacy code support: If your project is built on Python2.7, being able to use pip just makes dependency management smoother.
- Learning and debugging older projects: Understanding and debugging legacy code requires the same development environment as was used initially. Hence, having pip installed for Python2.7 comes handy here.
Cons of Installing Pip for Python2.7:
- No official updates: Since Python 2.7 is no longer officially supported, you won’t receive security updates and bug fixes from the official Python community for this version.
- Dependency issues: With most new libraries and Python packages focusing on Python 3, you might have dependency conflicts between packages created for different Python versions.
- Security concerns: Using an unsupported language version can lead to potential known security vulnerabilities that have been patched in newer versions but left unattended in Python 2.7.
In summary, while there may be valid reasons to continue using Python 2.7 and thus require pip installation for it, always balance it against the risks involved with sticking to outdated software versions. Remember the overall maintenance effort in terms of learning, updating, and migrating to newer languages often outweighs resistance to change due to familiarity or comfort.Before you embark on the installation process of pip for Python2.7 in Ubuntu 20.04, there are several pivotal prerequisites that need to be in place. These steps are crucial as they prepare your system for the successful installation of Pip – the package manager for Python that allows you to install and manage additional packages that are not part of Python’s Standard Library.
Pivotal Prerequisites:
- Existing Python Installation:
Pip is a Python package manager and therefore requires a Python installation. Despite Python3.x being the default Python version in recent Linux distributions like Ubuntu 20.04, Python2.7 can still be installed and used in tandem. Below is the command to confirm if Python 2.7 is installed on your Ubuntu 20.04:
python --version
If it is installed, this command should return ‘Python 2.7.x’. If Python2.7 is not installed, you can easily get it through the following command:
sudo apt-get install python-minimal
- Updated System Packages:
To ensure your entire system is updated before installing new packages, execute this:
sudo apt-get update sudo apt-get upgrade
- Internet Connection:
An active Internet connection is needed in order to download Pip and possibly other dependent packages from the internet.
After these prerequisites are established, we can now proceed to the actual installation of Pip for Python2.7.
Installing Pip for Python2.7:
Now that Python 2.7 and your Ubuntu 20.04 system are ready, you can proceed to install Pip by typing into the terminal:
sudo apt-get install python-pip
This command will trigger Ubuntu to fetch Pip from its repositories and begin the installation process. Once completed, you will have Pip installed on your Ubuntu 20.04, specific for Python2.7.
After the installation, verify whether pip was successfully installed by issuing the command:
pip --version
It should output a version number indicating that Pip is indeed installed, along with some additional information about the location of the binary and the associated Python version. For example:
pip 9.0.1 from /usr/lib/python2.7/site-packages (python 2.7)
If you see something similar, congratulations! Pip has been successfully installed, and you’re ready to start adding Python packages using pip install. As a professional coder, knowing Python and how to use Pip will undoubtedly open up an expansive world of opportunities when it comes to software development.sourceOf course, if you’re using Python 2.7 on Ubuntu 20.04 and need to install pip, follow the outlined steps:
Step 1: Check for Python 2.7
First, confirm that Python 2.7 is installed in your machine. It’s always good practice to check for the version of python you plan to use before installing any packages.
Open your terminal application and type:
$ python2.7 -V
This should display something like “Python 2.7.18”. If Python 2.7 isn’t present, then install it with:
$ sudo apt install python2.7
Step 2: Get the script for Pip installation
Next, we’re going to download a Python script from the official pip repository which allows us to install pip.
From your terminal paste this code snippet:
$ curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output get-pip.py
The cURL command is used here to download the ‘get-pip.py’ file via the specified URL. The ‘–output’ flag writes the output to a file called ‘get-pip.py’.
Step 3: Run the Pip install Script
Now that we have the script, let’s run it to install pip. To execute the script you downloaded, use:
$ sudo python2.7 get-pip.py
Running the script should start the installation process. Remember to use `sudo` to grant necessary permissions.
Step 4: Confirm the Pip Installation
After successful installation, verify your installation by checking the pip version:
$ pip2.7 --version
This will display the pip version installed, hence confirming if your installation was successful.
There you go! Now, you should have pip installed for Python 2.7. You can begin proceeding with whatever Python 2.7 projects require pip.
Remember, considering the fact that Python 2.7 has approached its end of life, it’s advisable to upgrade to the newer versions of Python, they are generally more robust and come equipped with better features.
Also, keep in mind these commands should be executed sequentially. Make sure to run them one at a time to catch any errors or issues that may occur and rectify them immediately before moving forward.
For more information on how to use pip, you may read the pip documentation available in the official Pip User Guide.
If you’ve ever worked with Python, you are probably familiar with its package manager, Pip. Pip is essential for installing and managing Python packages. However, in Ubuntu 20.04, the default version of Python is 3.8.x while some legacy projects might still need Python 2.7 to run
Pip isn’t pre-installed on Ubuntu 20.04. You’ll need terminal commands to get it onto your system, pointing out the crucial role they play during installation processes.
The good news is, you can accomplish this using the command line interface (CLI). Terminal commands are central to this process because they allow us direct interaction with the operating system. CLI often provides more powerful functionalities compared to graphical user interface applications. Remember that every command executed will have an effect on your system, so it’s beneficial to understand what each one does.
Here’s how you use terminal commands to install pip for Python 2.7 in Ubuntu 20.04:
You should first update the package list for the software you’re currently using. More precisely, type the following code into the terminal.
sudo apt-get update
This command refreshes your local package index. It doesn’t upgrade your software but ensures that your Ubuntu system knows about the newest versions available.
Next, you must check if Python 2.7 is already installed using the command:
python2.7 --version
If it’s not installed, it can be done through the following command:
sudo apt-get install python2.7
After successfully installing Python 2.7, you can then get Pip. Start by downloading the installation script from Pypa.io. Via the command:
wget https://bootstrap.pypa.io/get-pip.py
This command retrieves the get-pip.py script. The ‘wget’ utility is a free networking tool that retrieves content from web servers. It makes HTTP, HTTPS, and FTP requests to download files from the internet.
Finally, use Python 2.7 to run the downloaded Pip installation script, like so:
sudo python2.7 get-pip.py
The ‘sudo’ before the python interpreter makes sure that the script gets the permissions it needs to install Pip system-wide. However, remember that you may need to enter your account password to use ‘sudo’. After getting through these steps, you should have Pip installed!
To verify whether Pip was successfully installed for Python 2.7, you can print the Pip version information:
pip --version
In the output, make sure that the printed version number starts with ’20’ and that the location of the binary includes python2.7.
As seen in the process above, all actions related to installing Pip for Python2.7 on Ubuntu 20.04 are performed entirely using terminal commands—reinforcing their importance and effectiveness in managing Linux systems.
Both the Apt package tool and Manual downloading represent methods for installing software onto your Ubuntu 20.04 system. Comparing these techniques in the context of installing Pip for Python2.7 reveals their distinct mechanisms, uses, advantages, and potential drawbacks.
The Apt Package Tool
The Advanced Packaging Tool (Apt) is a command-line utility that serves as your gateway to software management in Ubuntu. It provides high-level package handling operations and simplifies the process of managing software on Unix/Linux systems.
sudo apt update sudo apt install python2.7 sudo apt install python-pip
With this installation method, it’s remarkably easy to install Pip for Python 2.7 on Ubuntu 20.04. However, keep in mind that from Ubuntu 20.04 onwards, the python-pip package has dropped support for Python2 [source] which leaves manual method as the only feasible choice.
Manual Installation Method
On the other hand, installing Pip by manually downloading enables you to obtain a specific version of the software directly from the source. This method requires attention to keeping packages updated since unlike Apt, it doesn’t auto-upgrade installed modules.
cd /usr/lib/python2.7 curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output get-pip.py sudo python2.7 get-pip.py
With the manual download method, you can ensure compatibility with Python2.7 by specifically acquiring the latest Pip version that supports it.
Drawbacks
While both methods are viable, they have various drawbacks. The Apt package tool offers simplicity but lacks flexibility – you cannot choose specific versions nor have direct control over where packages are installed. Conversely, the manual installation method gives you full control over software versions and location, but it requires more work when it comes to updates and maintenance, making it potentially less secure.
Analyzing these methods from an SEO perspective:
• ‘Apt package tool’ and ‘manual download’ are searched around 100-1k times monthly on global scale[source].
• Python2.7 and Ubuntu 20.04 are well-recognized terms in the developer community and their combination gives an organic touch to the content.
• ‘Install Pip for Python2.7 in Ubuntu 20.04’ is a long-tail keyword serving search intent.
In conclusion, while the Apt package tool is faster and handy when installing pip on Ubuntu, the particular use-case of installing pip for Python2.7 on Ubuntu 20.04 becomes more achievable using the manual download method as it allows specific version control. Both techniques have their own relevance and usability, adding flexibility in software installation. Your optimal choice will depend on the requirements of your specific situation.
pip
is an essential tool for Python programming, enabling the installation and management of Python packages. As of Ubuntu 20.04, Python 3.x is the default interpreter. But if you’re still working with Python 2.7, installing pip for it might be a bit trickier.
1. First Method: Get-Pip.py Installation Script
One of the common ways to install
pip
to your Python2.7 interpreter would be through the
get-pip.py
installation script. This approach allows you to target the specific Python interpreter that you would like to use.
Here’s how you can do this:
– First, download
get-pip.py:
bash
curl https://bootstrap.pypa.io/pip/2.7/get-pip.py –output get-pip.py