Python Study Notes-02

Sep 27, 2019#Python57

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This is a Python learning note that discusses the execution process of Python programs. It explains that Python source code files have a .py extension and are compiled into bytecode files with a .pyc extension. These bytecode files are then interpreted and executed by the Python Virtual Machine (PVM). The note also mentions different implementations of Python, including CPython, Jython, and IronPython.

Introduction to the Python Programming Language

Execution of Python Programs#

Source Code#

Python source code files usually have the .py extension. After writing the code, it is handed over to the compiler (which is the interpreter in this case).

Compiler#

When the source code is submitted to the compiler, it is compiled into bytecode, which is represented by files with the .pyc extension. These files are then executed by the interpreter.

Interpreter#

The bytecode is passed to the interpreter called PVM, which starts running the code. The compilation is also done by the interpreter. The execution process involves the PVM reading the bytecode and executing it on the processor. There are different implementations of the interpreter:

CPython#

The original and standard implementation.

Jython#

An implementation used for integration with the Java language.

IronPython#

An implementation used for integration with the .NET framework.