Set Python 3.5.2 as Default on CentOS – Tutorial Guide

Python is one of the most popular programming languages in the world. It’s used for everything from web development to data analysis to artificial intelligence. However, not all systems come with the latest version of Python pre-installed. If you’re using CentOS and want to set Python 3.5.2 as your default version, this tutorial guide is for you.

Setting Python 3.5.2 as your default version on CentOS can be a challenge, but it’s not impossible. This tutorial will walk you through the steps you need to take, from installing Python 3.5.2 to updating your system settings. By the end of this guide, you’ll have a working Python environment that’s ready for all your coding needs.

Whether you’re a beginner or an experienced programmer, setting Python 3.5.2 as your default on CentOS is an essential skill. This tutorial guide will provide you with clear, step-by-step instructions that are easy to follow. So, grab a cup of coffee and get ready to dive in!

If you’re tired of struggling with outdated versions of Python on CentOS, it’s time to take action. This tutorial guide will give you everything you need to make Python 3.5.2 your default version on CentOS. Whether you’re a web developer, a data analyst, or just someone who loves to code, having the latest version of Python at your fingertips is essential. So, what are you waiting for? Let’s get started!

“How To Set Python3.5.2 As Default Python Version On Centos?” ~ bbaz

Introduction

Python is one of the most popular programming languages used today. CentOS, one of the more popular Linux operating systems, comes with a default version of Python installed. However, it is often necessary to update the default version, which can be quite challenging. This tutorial aims to make this process easy by providing a step-by-step guide on how to set Python 3.5.2 as default on CentOS.

Step 1: Checking Default Python Version

Before we start, let’s check the default Python version that comes with our CentOS installation. We can do this by running the following command:

python -V

This will give us the version of Python installed. In our case, it is likely to be Python 2.7.x

Step 2: Installing Python 3.5.2

To install Python 3.5.2, we need to perform the following commands:

yum -y groupinstall developmentyum -y install zlib-dev openssl-devel sqlite-devel bzip2-develwget https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tgztar xzf Python-3.5.2.tgzcd Python-3.5.2/./configuremakemake install

Step 3: Linking Python 3.5.2 to Default

Now that Python 3.5.2 has been installed, we need to link it to our system’s default. We can do this by creating a symbolic link between the two versions using the following command:

ln -sf /usr/local/bin/python3.5 /usr/bin/python

Step 4: Checking Python Version Again

Now, let’s check the Python version again by running the following command:

python -V

This time, we should be seeing that Python 3.5.2 is the default version installed.

Step 5: Updating Pip

To use Python more efficiently, we need to update its package manager – pip. We can do this by running the following command:

pip install --upgrade pipecho “alias pip=pip3” >> ~/.bashrcsource ~/.bashrc

Step 6: Installing Virtualenv and Virtualenvwrapper

Python has a virtual environment feature that allows managing dependencies for each project without interfering with others. Before using them, we need to install both Virtualenv and Virtualenvwrapper:

pip install virtualenv virtualenvwrapperecho “export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python” >> ~/.bashrcecho “export WORKON_HOME=$HOME/.virtualenvs” >> ~/.bashrcecho “source /usr/local/bin/virtualenvwrapper.sh” >> ~/.bashrcsource ~/.bashrc

Step 7: Creating and Activating a Virtual Environment

After having installed Virtualenvwrapper, let’s create an environment named “myproject” and activate it:

mkvirtualenv myprojectworkon myproject

Step 8: Deactivating the Virtual Environment

If you want to deactivate your current virtual environment, enter the following command:

deactivate

Step 9: Removing the Virtual Environment

If you’re done with a project and it’s time to remove the virtual environment, type this instead:

rmvirtualenv myproject

Step 10: Comparison Table and Opinion

Default Python Version	Python 3.5.2
Comes pre-installed with CentOS	Needs manual installation
Outdated (2.7.x)	Latest version (3.5.2)
Packages dependency management inefficient	Virtualenvwrapper supports efficient package management with virtual environments
Less secure since it’s no longer supported	More secure since it is the latest version with vulnerabilities fixed

As seen in our comparison, setting up Python 3.5.2 as default on CentOS is crucial for those wanting to work with the latest version of Python. Additionally, having access to virtual environments improves data security and allows developers to manage dependencies more efficiently. By following the steps outlined above, you too can have Python 3.5.2 set as the default on CentOS in no time.

Here are some frequently asked questions about setting Python 3.5.2 as the default on CentOS:

1. Why would I want to set Python 3.5.2 as the default on CentOS?

   Python 3.5.2 is a newer version of Python that has many updated features and bug fixes. By setting it as the default, you can take advantage of these improvements and ensure that your code is running on the latest version.

2. How do I check which version of Python is currently installed on my CentOS system?

   You can run the command python --version to see which version of Python is currently installed.

3. Can I install Python 3.5.2 alongside other versions of Python?

   Yes, you can have multiple versions of Python installed on your system at the same time.

4. What is the process for setting Python 3.5.2 as the default?

   The process involves installing Python 3.5.2, updating the alternatives system, and setting the new version as the default. You can find a detailed tutorial guide on how to do this here.

5. Is there any risk of breaking existing applications by changing the default Python version?

   There is a small risk that some applications may rely on a specific version of Python and could break if the default version is changed. However, this is rare and can usually be resolved by specifying the correct version of Python in the application’s configuration.