def jaccard_similarity(list1, list2):
    """
    Calculates the Jaccard similarity between two lists.
    
    Parameters:
    list1 (list): The first list to compare.
    list2 (list): The second list to compare.
    
    Returns:
    float: The Jaccard similarity between the two lists.
    """
    # Convert the lists to sets for easier comparison
    s1 = set(list1)
    s2 = set(list2)
    
    # Calculate the Jaccard similarity by taking the length of the intersection of the sets
    # and dividing it by the length of the union of the sets
    return float(len(s1.intersection(s2)) / len(s1.union(s2)))

# Calculate Jaccard similarity between two sets
set1 = [1, 2, 3]
set2 = [2, 3, 4]
jaccard_sim = jaccard_similarity(set1, set2)

# Print the result
print("Jaccard Similarity between the given two sets: " + \
      str(jaccard_sim))