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# Example of using comments

# Variable initialization: User's age
user_age = 30  # Store the user's age in user_age variable


# Function definition: Calculate the user's birth year
def calculate_birth_year(age):
    # Return the value obtained by subtracting the age from the current year
    current_year = 2023
    return current_year - age



birth_year = calculate_birth_year(user_age)


print("Birth Year:", birth_year)  # Print the user's birth year


"""
This section is an example of multi-line comments.
This code block is not executed, but can be used
for documentation or explanation.
"""

# Explaining Code with Comments

Comments are **textual explanations** added to code that will be ignored when Python code is executed.

Properly used comments make code easier to understand and are often used for documentation to aid collaboration with other developers.

<br />

## How to Use Comments

In Python, comments are written using the hash (`#`) symbol. Any text that follows `#` is treated as a comment.

```python title="Writing a Comment"
# This line does not affect the execution of the Python code
print("Python programming!")  # This is also a comment
```

<br />

## Multi-line Comments

Python does not directly support multi-line comments, but you can write comments over multiple lines using `#`.

Additionally, you can use string literals (`'''` or `"""`) to simulate multi-line comments.

```python title="Writing Multi-line Comments"
# First line comment
# Second line comment

"""
Triple double-quotes can be used like multi-line comments.
However, this is actually a string and affects Python code behavior.
"""
```