Introduction
Embarking on the journey of learning a new programming language is akin to venturing into a new world, brimming with possibilities, challenges, and discoveries awaiting at every corner. The tradition of beginning this voyage with a simple "Hello, World!" program dates back to the 1970s. It serves as a gentle introduction to the syntax and structure of a new language. In Python, a language celebrated for its elegance and simplicity, writing a "Hello, World!" program in Python is a breeze.
This article unfolds the creation of a "Hello, World!" program in Python, delving into the syntax, the print function, and the significance of this modest yet powerful program.
Python Program to Print Hello world
At the heart of the "Hello, World!" program lies the print function. This function takes a piece of text, termed as a string, and displays it on the screen. Here's how the "Hello, World!" program looks in Python:
# This is a simple Hello, World! program in Python
- Python Code
Python Code
print("Hello, World!")
Output
Dissecting the Code:
Comments:
The line beginning with a hash (#) is a comment. Comments are instrumental in explaining the code to other developers or your future self. They are like annotations that are skipped over by Python.
The print Function:
The print() function is Python's way of communicating with the outside world. Whatever you place inside the parentheses gets displayed on the screen.
Using Print()
The simplest way to display text in Python is by using the print() function. For example,
Output:
Using sys
The sys module in Python provides access to some variables used or maintained by the Python interpreter, including functions that interact with the interpreter. Specifically, sys.stdout is a file object that represents the standard output stream. In the context of printing, you can use sys.stdout.write() to write directly to the standard output. For example,
- Python
Python
import sys
sys.stdout.write("Hello, World!\n")
Output:
Using a string Variable
We can use a string variable in Python to store the message and then print the variable. For example,
- Python
Python
message = "Hello, World!"
print(message)
Output:
Using f-string
f-string concept was introduced in Python 3.6. It provide a concise way to embed expressions inside string literals. For example,
- Python
Python
message = "World"
print(f"Hello, {message}!")
Output:
7+ registered 
