In python Set is a data type which stores multiple items in a single variable and the items can be of different types.<\/p>\n It accepts an element as an argument and if that element is not present then it add it o the set.<\/p>\n As set contains only unique elements, so duplicate elements so it will not not add the element again means set has no effect.<\/p>\n Let’s see an example program for it.<\/p>\n Set contains immutable elements. So, int, strings, bytes, frozen sets, tuples can be added as these are immutable object. But we can not add a list as it is mutable object.<\/p>\n Let’s see an example program for it how we can add a tuple to the set using add function.<\/p>\n Suppose we are trying to add a list as it is mutable object. It will give Type error.<\/p>\n Let’s see an example program for it.<\/p>\n By using Suppose we want to add a list, tuple at a time. Then let’s see how it works.<\/p>\nadd() method<\/code> or append() method<\/code> is used to simply add an item in set, tuple, dictionary etc.. but this method doesn’t add an element\u00a0 if the entered element already present before it.<\/p>\nAdding a single element to the set :<\/strong><\/h3>\n
Syntax : set.add(element)<\/pre>\n
Add a value to the set using add() function :<\/strong><\/h3>\n
#program :\r\n\r\n#Set initialized\r\nmy_set = {1, 2, \"Hello\", 3, \"Hi\"} \r\n# Adding a single element in set \r\nmy_set.add(5) \r\nprint(my_set)\r\n<\/pre>\nOutput :\r\n{1,2,3,5'Hello','Hi'}<\/pre>\nAdding a duplicate element to the set :<\/h3>\n
#program :\r\n\r\n#Set initialized\r\nmy_set = {1, 2, \"Hello\", 3, \"Hi\"} \r\n# Adding 'Hello' in set \r\nmy_set.add(\"Hello\") \r\nprint(my_set)\r\n<\/pre>\nOutput :\r\n{1,2,3,5'Hello','Hi'}<\/pre>\nAdding immutable objects to the set using add() function :<\/h3>\n
#Program :\r\n\r\n#Set initialized\r\nmy_set = {1, 2, \"Hello\", 3, \"Hi\"}\r\n# Adding a tuple in set\r\nmy_set.add((4, 5))\r\nprint(my_set)<\/pre>\nOutput :\r\n{1, 2, (4,5),\"Hello\", 3, \"Hi\"}<\/pre>\nAdding a mutable object to set will give TypeError :<\/h4>\n
#Program :\r\n\r\n#Set initialized\r\nmy_set = {1, 2, \"Hello\", 3, \"Hi\"}\r\n# Adding a tuple in set\r\nmy_set.add([21, 31])\r\nprint(my_set)<\/pre>\nOutput :\r\nTypeError: unhashable type: <\/span>'list'<\/span><\/pre>\nAdding multiple elements to the set :<\/h3>\n
update()<\/code> method we can add elements to the set.<\/p>\nSyntax : set.<\/span>update<\/span>(<\/span>*args<\/span>)<\/span><\/pre>\n#Program :\r\n\r\n#Set initialized\r\nmy_set = {1, 2, \"Hello\", 3, \"Hi\"}\r\n# Adding 10,20,30 in set\r\n#update() method is used\r\nmy_set.update((10, 20, 30))\r\nprint(my_set)<\/pre>\nOutput :\r\n{1,2,3,5'Hello','Hi',10,20,30}<\/pre>\nAdding elements from multiple sequences to the set :<\/h3>\n
#Program :\r\n\r\n#Set initialized\r\nmy_set = {1, 2, \"Hello\", 3, \"Hi\"}\r\n\r\n#list initialized\r\nmy_list= [10, 20, 3]\r\n#tuple initialized\r\nmy_tuple = (31, 32)\r\n#update() method is used\r\nmy_set.update(my_list,my_tuple)\r\nprint(my_set)<\/pre>\nOutput :\r\n{1,2,3,5'Hello','Hi',10,20,30,31,32}<\/pre>\nAdding dictionary keys to the set :<\/h3>\n
#Program :\r\n\r\n#Set initialized\r\nmy_set = set()\r\n#dictionary initialized\r\nmy_dict = {'Satya': 11, 'Omm': 12, 'Nitya': 15}\r\n#only keys ill be added\r\nmy_set.update(my_dict)\r\nprint(my_set)<\/pre>\nOutput :\r\n{'Satya','Omm','Nitya'}<\/pre>\n