Hello World Program in Python

In this lesson: Write and run your first Python program — print("Hello World"), how it works and common errors — with output.

The First Program

Every programmer's journey begins with printing "Hello, World!". It proves your Python setup works and teaches the most-used function: print().

Program 1: Hello World

print("Hello, World!")

Save this as hello.py and run it. print() sends whatever is inside the brackets to the screen.

Program 2: Print Multiple Lines

print("Welcome to Python")
print("This is line 2")
print("Learning is fun")

Each print() automatically moves to a new line. You can also use \n inside one string to break lines.

Program 3: print() Tricks (sep and end)

# sep changes the separator between items
print("2026", "06", "01", sep="-")

# end changes what comes after (default is newline)
print("Loading", end="...")
print("Done")

• sep="-" puts a dash between the items instead of a space.
• end="..." stops the line from breaking and adds "..." instead.
• So the next print continues on the same line.

How print() Works

• Items separated by commas are printed with a space between them by default.
• sep controls what goes between items.
• end controls what goes after the whole line (default \n).

Common Mistakes

• Forgetting the quotes: print(Hello) causes a NameError.
• Using smart/curly quotes from Word instead of straight quotes.
• Wrong file extension — save as .py.

Practice Tasks

1. Print "Hello" and your name on the same line using end.
2. Print today's date as DD/MM/YYYY using sep="/".
3. Print a 3-line poem with one print() using \n.

Summary

• print() displays output on screen.
• Each print starts a new line by default.
• sep = separator between items; end = what comes after the line.