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#Multiple python versions linux how to
#Multiple python versions linux install
#Multiple python versions linux software
#Multiple python versions linux code

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#Multiple python versions linux install

The output terminal install pyenv as below curl -L | bash You can view the installation instructions from Pyenv’s homepage on Github or use the command below $ curl -L | bash Xz-utils tk-dev libffi-dev liblzma-dev Install pyenv Libreadline-dev libsqlite3-dev wget curl libncurses5-dev libncursesw5-dev \ On Ubuntu sudo apt-get install make build-essential libssl-dev zlib1g-dev libbz2-dev \ On Rocky Linux / Centos sudo yum install zlib-devel bzip2 bzip2-devel readline-devel sqlite sqlite-devel openssl-devel xz xz-devel libffi-devel Pyenv integrates with the Virtualenv plugin to support creating virtual environments (virtual environments), and library projects will be installed in isolation in this virtual environment without affecting the system.It also offers the ability to quickly switch from one version of Python to another. Pyenv is a fantastic tool for installing and managing multiple Python versions.

#Multiple python versions linux code

The below code shows a simple use of the sys.version to check the version. The second one uses the sys.version_info, which contains a tuple containing some python version info.

The first uses the sys.version string, which contains some details like the python version, compiler version, etc. To get the version number using the sys library, we have two methods. These libraries are present in the python standard library, so we have no installation problem for these libraries. In this tutorial, we were using the sys and platform library. We have many modules that can help us to get the version of python. If f-string is supported, then continue with the code else, run some other code block. We can improve the program by checking the python version used programmatically and using the if/else condition to check whether f-strings are supported by the version. F-strings have been included in python in the 3.6 release, and so the code will work only on python version 3.6 or later. For example, assume you have written a python code that used f-strings for formatting strings. This technique has a benefit if our python program can be run only in a specified version. We can also use a python script to check which python version is used to run the script.

#Multiple python versions linux software

If we write software using Python2, it will have some problems while running using the python3 interpreter.Ĭhecking python version in command line using –version parameter Using Python Script Still, the major releases were not compatible with each other. The python micro and minor releases are somewhat compatible, and a new version can run the same code without much problem.

MICRO: The python micro releases contains many bug fixes and improvements.

For example, python 3.7.x, python 3.8.x, etc.

MINOR: These releases are bringing new functions, classes, features, etc.

For example, python 3 has some subversions like 3.8.3, 3.4.5, etc.

MAJOR: The Python programming language has two major releases that are not fully compatible with each other.

The below list shows some more details about them. įor example, In Python Version 3.8.6, 3 is the major release(also known as python3), 8 is the minor release number, and 6 is the micro release number. The production-ready releases follow the below-shown syntax for versioning. The Python versioning contains three numbers to identify each release uniquely. Python uses the semantic versioning technique to give a version to its new release.

#Multiple python versions linux how to

Many Linux systems also have multiple Python versions installed we will also see how to know which versions are installed and how to use a particular version. This tutorial will see how to check the python version running on your Linux system.