Python Hello, World

Python Hello, World#

Python is easy to learn and code and can be execute with python interpreter. We can also use Python interactive shell to test python code immediately. A simple hello world example is given below. Write below code in a file and save with .py extension. Python source file has .py extension.

“Hello, World!” Program#

Let’s create a very simple program called Hello World. A “Hello, World!” is a simple program that outputs Hello, World! on the screen.

print("Hello, World!")

Let’s break down the different components of the code.#

  1. print() is a function that tells Python to display or output whatever we put in the parentheses.

  2. Some functions, like the print() function, are built-in functions included in Python by default.

  3. Inside the parentheses of the print() function is a sequence of characters — Hello, World! — that is enclosed in quotation marks ' or ".

  4. Once we are done writing our program, save the file and we can exit notepad.

Running the “Hello, World!” Program#

The hello.py program produce the following output:

Hello, World!

print("Hello, World!")

Hello, World!

Example:#

Let us print 8 blank lines. You can type:

>>>print (9 * "\n")

or

>>>print ("\n\n\n\n\n\n\n\n\n")

print ("Hello World!")
print (9 * "\n")
print ("Hello World!")

Hello World!










Hello World!

print ("Jan\nFeb\nMar\nApr\nMay\nJun\nJul\nAug\nSep\nOct\nNov\nDec")

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

print ("I want \\n to be printed.")
print("I'm very *happy*")

I want \n to be printed.
I'm very *happy*

print ("Hello\tWorld!") # \t is equal to 4 spaces

Hello	World!

print ("""
Routine:
\t- Eat
\t- Study
\t- Sleep\n\t- Repeat
""")

Routine:
	- Eat
	- Study
	- Sleep
	- Repeat
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