Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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6.23 LAB: Leap year - functions

 

A year in the modern Gregorian Calendar consists of 365 days. In reality, the earth takes longer to rotate around the sun. To account for the difference in time, every 4 years, a leap year takes place. A leap year is when a year has 366 days: An extra day, February 29th. The requirements for a given year to be a leap year are:

1) The year must be divisible by 4

2) If the year is a century year (1700, 1800, etc.), the year must be evenly divisible by 400

Some example leap years are 1600, 1712, and 2016.

Write a program that takes in a year and determines whether that year is a leap year.

Ex: If the input is:

1712

the output is:

1712 is a leap year.

Ex: If the input is:

1913

the output is:

1913 is not a leap year.

Your program must define and call the following function. The function should return True if the input year is a leap year or False otherwise.
def is_leap_year(user_year)

Use Python, please.

### LAB ACTIVITY: Leap Year - Functions

**Instructions:**

You are tasked with defining a function in Python to determine if a year is a leap year. The template provided will help you get started.

#### main.py

```python
# Define your function here.

if __name__ == '__main__':
    # Type your code here. Your code must call the function.
```

**Explanation:**

- **Line 1**: This is a placeholder where you should define your function. The function will encapsulate the logic needed to determine if a given year is a leap year.

- **Line 3**: This line sets up the main execution environment. The `if __name__ == '__main__':` construct ensures that the code block beneath it runs only when the script is executed directly, rather than when it is imported as a module in another script.

- **Line 4**: Here, you will write code to call the function you defined. This is where you test your function to ensure it works as expected.

**Objective:** 
Write a function that correctly identifies a leap year based on the following criteria:
- A year is a leap year if it is divisible by 4, except for end-of-century years, which must be divisible by 400.
expand button
Transcribed Image Text:### LAB ACTIVITY: Leap Year - Functions **Instructions:** You are tasked with defining a function in Python to determine if a year is a leap year. The template provided will help you get started. #### main.py ```python # Define your function here. if __name__ == '__main__': # Type your code here. Your code must call the function. ``` **Explanation:** - **Line 1**: This is a placeholder where you should define your function. The function will encapsulate the logic needed to determine if a given year is a leap year. - **Line 3**: This line sets up the main execution environment. The `if __name__ == '__main__':` construct ensures that the code block beneath it runs only when the script is executed directly, rather than when it is imported as a module in another script. - **Line 4**: Here, you will write code to call the function you defined. This is where you test your function to ensure it works as expected. **Objective:** Write a function that correctly identifies a leap year based on the following criteria: - A year is a leap year if it is divisible by 4, except for end-of-century years, which must be divisible by 400.
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