2to3

2to3 is a command line tool used for converting Python 2.x code to Python 3.x code. It is a part of the standard distribution of Python. This tool helps automate the process of migrating code written in Python 2 to Python 3, which can be necessary when transitioning to newer versions of Python. 2to3 analyzes the source code for syntactic and semantic differences between Python 2 and Python 3 and applies the necessary transformations to make the code valid in Python 3. It replaces or modifies various components such as print statements, imports, and syntax changes to make the code compatible. The tool generates a diff file showing the changes made, making it easy to review and manually adjust the converted code as needed. 2to3 also provides various options for customizing the conversion process, such as fixing specific types of issues, dealing with certain incompatibilities, and generating warnings or error messages. It is widely used by developers and organizations to streamline the migration of code from Python 2 to Python 3.