how to use python instead of python3
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Title: Transitioning to 'python' from 'python3' in Python Development
Introduction:
Python has evolved over time, and one noticeable change was the transition from using 'python' to 'python3' for invoking the Python 3.x interpreter. However, as of Python 3.0, the 'python' command is typically an alias for 'python3'. This tutorial aims to explain why you might still encounter 'python' being used instead of 'python3', how to switch to using 'python' directly, and provides code examples to illustrate the process.
Why Use 'python' Instead of 'python3'?
Transitioning to 'python':
To start using 'python' instead of 'python3', follow these steps:
Check Python Version:
Before making any changes, it's crucial to check which version of Python is installed on your system. Open your terminal or command prompt and type:
This command will display the installed Python version. If it's Python 3.x, you can proceed.
Alias 'python' to 'python3':
If 'python' is not already aliased to 'python3', you can set up the alias manually. Open your shell configuration file (e.g., .bashrc, .zshrc, .bash_profile) using a text editor like nano or vim.
Add the following line at the end of the file:
Save the file and exit the text editor. Then, either restart your terminal or run:
This command will apply the changes to your current terminal session.
Verify the Alias:
After setting up the alias, ensure that 'python' now points to 'python3' by typing:
It should display the same Python 3.x version you saw earlier.
Code Example:
Let's illustrate the usage of 'python' with a simple script. Consider the following Python code (saved as 'hello.py'):
You can execute this script using 'python':
This command will output:
Conclusion:
In this tutorial, you've learned how to transition from using 'python3' to 'python' for invoking the Python 3.x interpreter. By setting up an alias, you can make your development environment more convenient and compatible across different systems. Remember to verify the Python version and update your shell configuration accordingly. Happy coding!
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