{"id":21671,"date":"2018-07-18T03:30:15","date_gmt":"2018-07-18T03:30:15","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=21671"},"modified":"2026-04-11T15:53:51","modified_gmt":"2026-04-11T10:23:51","slug":"python-interpreter","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/python-interpreter\/","title":{"rendered":"What is Python Interpreter – Environment, Invoking & Working"},"content":{"rendered":"

Ever wondered how the plain text you write as .py turns into a living, breathing application? The answer is the Python interpreter\u2014the invisible engine that reads, understands, and runs your code. In this deep dive, we\u2019ll walk through everything you need to know about it, using clear, friendly language that even a middle-school student can follow. By the end, you\u2019ll grasp how the interpreter works, why it matters, and how to choose the right one for your projects.<\/p>\n

So, let\u2019s start the Python Interpreter Tutorial.<\/p>\n

Python Interpreter & its Environment (Source Code Encoding)<\/h3>\n

The default encoding for a Python source file is UTF-8. This is a Unicode Standard variable-width character encoding;<\/em> it can encode 1,112,064 valid code points in Unicode using up to four 8-bit bytes.<\/p>\n

Using this encoding, we can use characters of most languages \u2013 we can use these in string literals, comments<\/strong>, and identifiers<\/strong>.<\/p>\n

Since the standard library makes use of ASCII characters only, you must declare the use of this encoding to your editor.<\/p>\n

This is to ensure that all such characters display without a problem. The font should be such that it supports all characters in the file.<\/p>\n

We add this comment as the first line of the file we want to use it in-<\/p>\n

# -*- coding: encoding -*-<\/pre>\n
In this, encoding is a valid codec that Python supports.<\/p>\n
Similarly, when you want to use the Windows-1252 encoding, you can use this as the first line of code:<\/p>\n
# -*- coding: cp1252 -*-<\/pre>\n
However, when you want to begin code with a UNIX shebang line, you can put the comment for encoding second-<\/p>\n
#!\/usr\/bin\/env python3\r\n# -*- coding: cp1252 -*-<\/pre>\n
How to Invoke the Python Interpreter?<\/h3>\n
On your machine, you can find your interpreter at an address like:<\/p>\n
C:\\Python36<\/p>\n
Or it may reside on the location you selected at the time of installation. Add path using this command:<\/p>\n
set path=%path%;C:\\python36<\/pre>\n
\"Python<\/a>
How to Invoke the Python Interpreter?<\/p><\/div>\n
Start the Python Interpreter<\/h3>\n
On Windows, when you want to run the Python interpreter in the shell, you can type the following:<\/p>\n
$python<\/pre>\n
To get out of the interpreter in disassembling the Bytecode\u00a0shell, you can type:<\/p>\n
>>> quit()<\/pre>\n
Output<\/strong><\/p>\n
Bye<\/div>\n
Alternatively, you can use an end-of-file character at the prompt.<\/p>\n
Python interpreter exits with a zero exit status. You can use it in a REPL (Read-Evaluate-Print-Loop<\/em>) fashion.<\/p>\n
But if you want, you can save your Python code as a script and execute it using the interpreter:<\/p>\n
$python demo.py<\/pre>\n
To enter interactive mode after running a script, you can pass \u2013i<\/i> before the script.<\/p>\n
The command python -c command [arg] … executes statements in the command<\/i>, and python -m module [arg] … executes the source file for the module<\/i>.<\/p>\n
Features of Python Interpreter<\/h3>\n
Python interpreter offers some pretty cool features:<\/p>\n