Final answer:
To switch from Python 2 to Python 3 in Linux, ensure Python 3 is installed and use the 'python3' command to run scripts. Update existing Python 2 scripts using the '2to3' tool. Some manual changes may be required.
Step-by-step explanation:
To switch from Python 2 to Python 3 in Linux, you need to ensure that you have Python 3 installed on your system. You can check if Python 3 is installed by running the 'python3' command in the terminal. If it is not installed, you can install it using the package manager for your distribution (e.g., apt for Ubuntu, yum for CentOS).
Once Python 3 is installed, you can run your Python scripts using the 'python3' command instead of 'python'. For example, if you have a script named 'script.py', you can run it using the command 'python3 script.py'. It is also a good practice to update your existing Python 2 scripts to be compatible with Python 3. Python provides a tool called 2to3 that can assist in the conversion process. You can use it by running the '2to3' command followed by the name of the script you want to convert.
Keep in mind that some differences between Python 2 and Python 3 might require manual changes to your code. It is recommended to consult the Python 3 documentation and resources for guidance on specific changes and compatibility issues.