Install specific version of python6/14/2023 ![]() To install more Python versions, just change the version number from 3.9 to which ever version you choose, that is available from the deadsnakes repository. ![]() Pip 20.0.2 from /home/me/.venvs/my-venv-name/lib/python3.8/site-packages/pip (python 3.8) Pip 21.2.4 from /home/me/.venvs/my-venv-name/lib/python3.9/site-packages/pip (python 3.9)ĭeactivate the venv virtual environment (my-venv-name) versions outside any virtual environments # Check Python python -V (my-venv-name) versions within the venv virtual environment # Check the Python version inside the venv: There are many issues related to the package dependencies when installing older versions. python pip install -r myproject/requirements.txt Older versions are not recommended because of a reason. # Activate the new source ~/.venvs/my-venv-name/bin/activate We can easily install all the packages with their specific version using the following command below. # Create a new venv virtual environment with Python 3.9 in python3.9 -m venv ~/.venvs/my-venv-name Someone else had this issue and the answer was: sudo add-apt-repository universe sudo apt update sudo apt install python3. Python version 2.7 will install at C:Python27, so that you can have. # Make a folder for venv virtual mkdir ~/.venvs I need to install an older version of Python to get some software to work. By design, Python installs to a directory with the version number embedded, e.g. Install the venv package and create a venv virtual environment # Install the venv package for Python sudo apt install python3.9-venv ![]() # Install Python sudo apt install python3.9 ![]() Safer than downgrading or upgrading is installing other versions of Python on the same system.įor example, in Ubuntu 20.04, to install Python 3.9: # Add the deadsnakes sudo add-apt-repository ppa:deadsnakes/ppa Your system might need exactly that version of Python. ![]() Source: Dangerous to downgrade (and to upgrade)ĭepending on if your system itself uses Python, it could be dangerous for system stability to change the system Python version. The simplest way to install not only pandas, but Python and the most popular packages that make up the SciPy stack. That is not the same as virtualenv, which is a third party package, outside the Python Standard Library. The recommended way of managing virtual environments since Python 3.5 is with the venv module within the Python Standard Library itself. Python add the versions bucket if you havent already scoop install python27 python python -> Python 3.6.2 switch to python 2.7.x scoop reset. ![]()
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