examples.py

"""
Hello Python - Code Examples

This file contains working examples demonstrating your first Python concepts.
Run this file to see the output of each example.

Usage:
    python3 examples.py
"""

# ==============================================================================
# Example 1: Your First Python Program
# ==============================================================================

print("=" * 50)
print("Example 1: Your First Python Program")
print("=" * 50)

# The print() function displays text to the screen
# Text must be enclosed in quotes (single or double)
print("Hello, World!")
print('This also works with single quotes!')

print()  # Blank line for readability


# ==============================================================================
# Example 2: Printing Numbers and Multiple Values
# ==============================================================================

print("=" * 50)
print("Example 2: Printing Numbers and Multiple Values")
print("=" * 50)

# You can print numbers without quotes
print(42)
print(3.14)

# Print multiple values by separating with commas
print("The answer is:", 42)
print("Pi is approximately", 3.14159)

# Python automatically adds spaces between values
print("I", "love", "Python")  # Output: I love Python

print()


# ==============================================================================
# Example 3: Using Comments
# ==============================================================================

print("=" * 50)
print("Example 3: Using Comments")
print("=" * 50)

# This is a single-line comment
# Comments help explain your code
# Python ignores everything after the # symbol

print("This line runs")  # This comment is ignored

# You can "comment out" code to temporarily disable it
# print("This line will NOT run")

"""
This is a multi-line comment.
You can write multiple lines of explanation here.
Useful for documenting larger sections of code.
"""

print("Comments help make code readable!")

print()


# ==============================================================================
# Example 4: Creating Simple Output Patterns
# ==============================================================================

print("=" * 50)
print("Example 4: Creating Simple Output Patterns")
print("=" * 50)

# You can use print() multiple times to create patterns
print("*")
print("**")
print("***")
print("**")
print("*")

print()  # Separator

# Or print special characters
print("Hello")
print("-----")
print("World")

print()


# ==============================================================================
# Example 5: The print() Function Options
# ==============================================================================

print("=" * 50)
print("Example 5: Advanced print() Usage")
print("=" * 50)

# By default, print() adds a newline at the end
# You can change this with the 'end' parameter
print("Hello", end=" ")
print("World")  # This prints on the same line
# Output: Hello World

print()

# The 'sep' parameter changes how values are separated
print("A", "B", "C")              # Default: separated by spaces
print("A", "B", "C", sep="-")     # Separated by dash
print("2023", "12", "25", sep="/")  # Output: 2023/12/25

print()


# ==============================================================================
# Example 6: Escape Characters
# ==============================================================================

print("=" * 50)
print("Example 6: Escape Characters")
print("=" * 50)

# Use \n for a new line
print("First line\nSecond line")

# Use \t for a tab
print("Name:\tJohn")
print("Age:\t25")

# Use \" to include quotes in your string
print("She said, \"Hello!\"")

# Use \\ to include a backslash
print("C:\\Users\\Documents")

print()


# ==============================================================================
# Summary
# ==============================================================================

print("=" * 50)
print("Summary")
print("=" * 50)
print("In this file, we covered:")
print("1. Basic print() function usage")
print("2. Printing numbers and multiple values")
print("3. Writing comments to document code")
print("4. Creating simple output patterns")
print("5. Advanced print() options (end, sep)")
print("6. Using escape characters for formatting")
print()
print("Try modifying these examples and see what happens!")
print("=" * 50)