[Python]有关Set常用命令

 

my_set = set() #create a new set, 虽然set的显示结果为{item, item1...}，但是不能用{}来创建集合，应该{}默认是创建dict
print(help(my_set)) #查看帮助
my_set.add(\'jerry\') #添加元素用add,而非list中的append
my_set.add(\'elaine\')
my_set.add(\'george\')
my_set.add(\'kramer\')
my_set.add(\'hawkeye\')
my_set.add(\'henry\')
my_set.add(\'radar\')
my_set.add(\'frank\')
print(my_set)
for name in sorted(my_set, reverse=False):
    print(f\'\t{name}\')
print(len(my_set)) #计算元素个数
popped_item = my_set.pop() #pop规则是什么？哪个元素被删除了, 随机剔除
print(popped_item)
print(my_set)
my_set.remove(\'hawkeye\') #删除指定元素
#my_set.insert(0, \'hot_lips\') 这是不行的，set没有inset method
print(my_set)
my_set.clear() #清空全部元素
print(my_set)

del my_set #删除my_set


my_list = [\'spurn\', \'charade\', \'spurn\', \'rechazar\', \'cáscara\', \'corteza\', \'corteza del limón\', \'aseo de casa\', \'aseo personal\']
your_set = set(my_list) #用set(list)可以把list转换成集合，好处在于剔除重复元素 remove duplicates
print(len(my_list))
print(len(your_set))
print(\'words in my_list include: \')
for index, item in enumerate(my_list):
    print(f\'\t{index+1}.{item}\')
#另外还有集合的交集，并集，补集