How to switch python version in pycharm

How to switch python version in pycharm: 1. Through project configuration, in the "New Project" or "Open" dialog box, you can specify the version of the Python interpreter; 2. Use a virtual environment, which is for each Each project provides an isolated Python environment, and libraries and dependencies can be changed and upgraded without affecting other projects; 3. Using system environment variables, you can add a new system environment variable pointing to the Python interpreter used. Path; 4. Use third-party plug-ins, etc.

#The operating system of this tutorial: Windows 10 system, PyCharm 2023.2 version, Dell G3 computer.

There are several main ways to switch Python versions in PyCharm:

1. Through project configuration:

Create a new project or open an existing project When you have a project, PyCharm allows you to choose which Python interpreter to use. In the "New Project" or "Open" dialog box, you can specify the version of the Python interpreter.

Additionally, for existing projects, you can change the Python interpreter in settings. Enter File -> Settings -> Project: 4fc59f85b86f3cdcf539b23b3b2209e3 -> Python Interpreter. Here you can see the Python version used by the current project. Click "..." on the right to select other installed Python versions.
2. Use a virtual environment:

For multiple projects on the same machine, you may need to switch Python versions in different projects to avoid conflicts between libraries and dependencies. conflict. In this case, a virtual environment can be used.

Virtual environments provide an isolated Python environment for each project so that libraries and dependencies can be changed and upgraded without affecting other projects. PyCharm supports the use of venv and conda as tools for creating and managing virtual environments.

The command to create a virtual environment using venv is:

python3 -m venv <env_name>

The command to activate the virtual environment varies according to the operating system.

On Windows it is:

<env_name>\Scripts\activate

On Unix or Mac it is:

source <env_name>/bin/activate

The command to create a virtual environment using conda is:

conda create --name <env_name>

Activate virtual The environment command is:

conda activate <env_name>

3. Use system environment variables:

In some cases, other applications outside of PyCharm may be needed Or change the Python version in the shell script. In this case, you can set the system's environment variables to specify the Python interpreter to use. For example, on Windows, you can right-click Computer or This PC and select Properties -> Advanced system settings -> Environment Variables. Here, you can add a new system environment variable PYTHONPATH, pointing to the path of the Python interpreter you wish to use.

Note: Changing system environment variables may affect the behavior of other applications and shell scripts, so proceed with caution.
4. Use third-party plug-ins:

PyCharm has some third-party plug-ins (for example: Python switcher) that can help you switch Python versions more conveniently. You can search for and install these plugins to get more information on how to switch Python versions.

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