Write a function to find the difference between the largest even number and smallest odd number in a list of integers.

Here’s a Python function that calculates the difference between the largest even number and the smallest odd number in a list of integers:

def find_difference(nums):
# Filter even and odd numbers
even_numbers = [num for num in nums if num % 2 == 0]
odd_numbers = [num for num in nums if num % 2 != 0]

def find_difference(nums):
    # Filter even and odd numbers
    even_numbers = [num for num in nums if num % 2 == 0]
    odd_numbers = [num for num in nums if num % 2 != 0]
    
    # Check if there are both even and odd numbers in the list
    if not even_numbers or not odd_numbers:
        return "List must contain both even and odd numbers"
    
    # Find the largest even and smallest odd numbers
    largest_even = max(even_numbers)
    smallest_odd = min(odd_numbers)
    
    # Calculate the difference
    difference = largest_even - smallest_odd
    return difference

Explanation

1. The function find_difference takes a list of integers nums.
2. It separates even and odd numbers using list comprehensions.
3. If there are no even or odd numbers, it returns a message indicating that both types are needed.
4. It finds the largest even number and smallest odd number.
5. Finally, it calculates and returns the difference between them.

Example Usage

numbers = [3, 8, 5, 12, 7, 2]
result = find_difference(numbers)
print(result)  # Output: 7 (12 - 5)

This function assumes that the list contains at least one even and one odd number for the calculation.