python中判断集合范围的方法小结

>>> s1＝set([1, 2, 3, 4, 5])
>>> s2＝set([1, 2, 3, 4])
>>> s3＝set(['1', '8', '9', '5'])

>>> s1 > s2
True
>>> s1 > s3
False
>>> s1 >= s2
True

>>> s2 < s1
True
>>> s1 < s3
False‍
>>> s3 < s1
False

>>> s1 == s2
False
>>> s2 == s3
False
>>> s1 != s2
True

s1 = {1, 2, 3}
s2 = set(range(10))
print(s1 < s2) # True
print(s1 <= s2) # True
s3 = {4, 5, 6}
print(s3 > s1) # False
print(s2 >= s3) # True

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