what is stdin in python

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Title: Understanding stdin in Python: A Comprehensive Tutorial
Introduction:
In Python, stdin (standard input) is a fundamental concept that allows you to receive input from the user or external sources during the execution of a script or program. This tutorial aims to explain what stdin is, how it works, and provide practical examples to help you grasp its usage.
Stdin represents the standard input stream, which is the default source of input for a Python script. It is a way to interact with the user by reading data from the console or from other input sources.
In Python, you can use the input() function to read input from the user via stdin. The input() function takes a prompt (a string to display to the user) and waits for the user to enter data, terminated by pressing the Enter key.
Let's dive into some code examples to illustrate the usage of stdin:
In this example, the input() function is used to read a line of text from the user, and the entered text is then displayed using the print() function.
This example demonstrates how to read multiple lines of text until an empty line is entered. It uses a while loop along with a try-except block to handle the end-of-file (EOF) condition, allowing the user to enter multiple lines.
In this example, we temporarily redirect stdin to read input from a file. This technique can be useful when you want to read input from sources other than the console.
Understanding stdin is crucial for building interactive and user-friendly Python scripts. Whether you are taking input from the console or redirecting stdin to read from files or other sources, stdin provides a versatile way to handle input in your Python programs.
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