Syntax error on print with Python 3

In Python 3.x releases, there have been changes in syntax compared to the older Python 2.x releases. Notably, the print statement has been replaced with the print() function, requiring the use of parentheses when invoking the function.

Usage

In Python 3,

gives "Syntax Error: invalid syntax"

from __future__ import print_function

Ensuring compatibility between Python 3.x and older Python 2.x versions is vital in maintaining smooth program execution. When employing the print() function within your code, it is prudent to import the function as a good practice, as this safeguards against potential errors that may arise when Python 2.x users attempt to execute the program. By adopting this proactive approach, you mitigate the risk of discrepancies in print statement handling and foster a more seamless experience for users across different Python environments.

To ensure compatibility and enable the use of the print() function from Python 3 in Python 2.x, the "from future import print_function" statement is employed. By incorporating this statement at the beginning of the file, fundamental language modifications are communicated to the compiler right from the start, allowing your code to seamlessly function on both Python 2.x and Python 3.x environments. This proactive approach guarantees a smooth execution across versions and ensures your code remains adaptable to the evolving Python ecosystem.

A future statement holds a special significance during the compilation process, enabling the implementation of altered semantics for core constructs through the generation of distinct code. In some instances, the introduction of a new feature might introduce incompatible syntax, necessitating the compiler to parse the module differently. As these decisions fundamentally impact the code's behavior, they must be addressed at compile time and cannot be deferred to runtime.

Conclusion

When using Python 3, a syntax error occurs if the print statement from Python 2 is mistakenly used without parentheses. To rectify this, the print() function should be utilized to ensure compatibility and proper execution in Python 3.