Python判断集合的方法有哪些？

my_set1 = {"apple", "orange", "pear", "grape"}

my_set2 = {"banana", "watermelon"}

# 两个集合没有相同元素

ret_bool = my_set1.isdisjoint(my_set2)

print(ret_bool) # 返回 True

my_set1 = {"apple", "orange", "pear", "grape"}

my_set2 = {"banana", "watermelon","apple"}

# 两个集合有相同元素

ret_bool = my_set1.isdisjoint(my_set2)

print(ret_bool)

my_set1 = {"apple", "orange", "pear", "grape"}

my_set2 = {"banana", "watermelon"}

# 第二个集合不是第一个集合的子集

ret_bool = my_set2.issubset(my_set1)

print(ret_bool) # 返回 False

# 第二个集合是第一个集合的子集

my_set1 = {"apple", "orange", "pear", "grape"}

my_set2 = {"orange","apple"}

ret_bool = my_set2.issubset(my_set1)

print(ret_bool) # 返回 True