प्रोग्राम की सुविधाएँ · बहुसमुच्चय प्रतिच्छेद की गिनती

from collections import Counter

def intersect_counts(left, right):
    left, right = tuple(left), tuple(right)
    if any(type(v) is not int for v in left + right):
        raise ValueError("member.integer")
    common = Counter(left) & Counter(right)
    return [(value, common[value]) for value in sorted(common)]