Hi there Itsourcecoders! For today’s article, I will give you the list of best Python interpreter or compiler online 2021 and to let you explore Python downloadable interpreters.

In the world of programming language, Python is a specification that can be implemented in different ways. Every Python programming language implementation uses a separate interpreter.

There is no shortage of online and downloadable interpreters for Python as the fastest growing programming language in 2021. But because each of them meets particular requirements, you first need to find out which one suits you.

List of Python Interpreters | Guide to best python interpreter online 2021
List of Python Interpreters | Guide to best python interpreter online 2021

This article about the best Python interpreters online answers the questions:

  • What is an Interpreter?

An interpreter by definition is a kind of computer program that executes the instructions written in some programming or scripting language directly. We mean by direct execution that it does not involve first compiling the instructions into a machine language program.

  • Why interpreter is used in Python?

The interpreter for Python could be located in your Python directory or the Python IDE and compiler that is installed or in your computer.

  • What are the two ways to use Python interpreter?

The python interpreter has two ways of using it: informational mode and script mode. You can also save the commands to a text file with the conventional suffix “py”, for example, program.py.

List of Python Interpreters 2021 | Guide to Best Python Interpreter Online

Time needed: 10 minutes.

Here is the List of Best Python Interpreter Online 2021

  1. PyPy

    Python Interpreter-Pypy
    The popular Python interpreter or compiler was considered as one of the best Python interprets because it is about 4.4 times faster than other interpreters.

    PyPy is a fast, compliant alternative programming language implementation for Python. In RPython, which is a limited statically-typed subset of the Python programming language, the Python interpreter is implemented.

    The presented Python interpreter online supports C, CLI, and JVM back-ends, featuring a JIT compiler. The primary objective of PyPy is to provide full consistency with the implementation of the CPython reference while improving performance at the same time.

    PyPy is used by developers of Python who want to boost the performance of any particular Python code.

  2. CPython

    Python Interpreter-CPython
    It is the default implementation of the Python programming language and is the most widely used. Written in C and Python, CPython is an interpreter or compiler that provides C and other programming languages with a foreign function interface.

    It is also possible to classify CPython as a compiler because, before interpreting it, it converts the Python code into bytecode. It uses a GIL, Global Interpreter Lock, which can be limited as it disables a process from the concurrent Python threads.

    CPython gives the most compatibility with Python packages and C extension modules as the reference implementation of Python. As such, all Python programming language versions are implemented in C.

    CPython is the only option to function properly using Python packages that rely on C extensions. If one wishes to reach the widest possible audience for a program developed in the Python programming language, targeting CPython is a must.

  3. PythonNet

    Python Interpreter-Python.net
    PythonNet offers almost seamless integration with the .NET CLR for a native Python installation. It is possible to consider its approach inverse to that of the one followed by the IronPython.

    Working with Mono, this Python interpreter or compiler allows a native Python installation to work within the .NET framework on a non-Windows operating system. Without any problems, PythonNet can be run alongside IronPython.

  4. IronPython

    Python Interpreter-Ironpython
    IronPython uses both the Python and .NET framework libraries to implement the Python programming language for the .NET framework. It can also expose Python code to other .NET framework-related languages.

    This python interpreter or compiler online offers dynamic compilation support and comes with an interactive console. Using the Python interpreter allows .NET objects to be dealt with by Python scripts. IronPython comes directly incorporated into the Visual Studio IDE with Python Software for Visual Studio

  5. Stackless Python

    Python Interpreter-Stackless
    The C call for its stack depends on CPython and other common Python interpreters. With the Stackless Python parser, however, this is not the case.

    Since the C stack is used by Stackless Python, it is clear between calls to functions. The Python interpreter is, therefore, not based on the C call for its stack. Stackless Python is written using C and Python, much like CPython.

    This Python interpreter or compiler online provides support for communication channels, coroutines, precompiled binaries, round-robin scheduling, task serialization, and taskset’s, in addition to providing support for threads.

    By far the most significant element of Stackless Python is microthreads. The feature helps to prevent much of the overhead associated also with common operating system strings.

  6. Jython

    Python Interpreter-Jython
    Formerly referred to as JPython, Jython is a Python implementation that runs on the Java framework. Jython transforms Python code into Java bytecode, written in Java and Python, and thus allows Python code to run on any computer with a JVM.

    For both static and dynamic compilation, Jython provides support. An significant feature of the common Python interpreter is that, like a Python module, it allows importing as well as using any Java class.

    You can put a bet on Jython, whether you need to connect with an existing Java codebase or write Python code for the JVM.

  7. PyJS

    Pyjs is a Web and Desktop Rich Internet Application (RIA) Development Platform. You can write your JavaScript-powered web applications completely in Python with Pyjs.

    Pyjs includes a compiler for Python-to-JavaScript, an AJAX framework and a Widget Set API. Pyjs began life as a Python port of the Java-to-JavaScript compiler, the Google Web Toolkit.

  8. Nuitka

    Nuitka is a compiler for Python written in Python. This Python interpreter or compiler online is completely Python2 (2.6, 2.7) and Python3 compliant (3.3 .. 3.9) and it does a lot of clever stuff, and spits out an executable or extension module. You feed it to your Python app.

    Nuitka is a decent substitute for the Python interpreter right now and compiles every construct provided by all applicable versions of CPython, and even irrelevant ones, such as 2.6 and 3.3. This transforms Python into a C program that is then connected to libpython in a very compatible manner to run in the same way as CPython does.


That completes our list that is available details about the best Python interpreters.

You can work with the presented interpreters for python that you are comfortable. Each one of them, however, has its own uniqueness that is helpful especially when working professionally.

May this article could help you to choose wisely.

It might be a good idea to have the working knowledge of more than one Python interpreter. Therefore, the more you to explore would be better.

Now, have you understood what is Python interpreter or compiler?

Which one of the list of Python interpreters 2021 interest you the most? Let us know through the comments!

Note: If you have more ideas or suggestions about best Python interpreters or compilers, you are free to inform us through our contact and comments.

Happy coding!

Related Article Below

Recommended Articles From the Author

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.