How to append elements to a collection in python

In Python set is a collection type of basic data type. It has two types: mutable collection (set()) and immutable collection (frozenset). The operations of creating a set, adding a set, deleting a set, intersection, union, and difference are all very practical methods.

Create a collection set (recommended learning: Python video tutorial)

The python set class is in the sets module of python. Everyone In the python2.7.x currently used, sets can be created directly without importing the sets module.

Collection addition

There are two common methods for adding python collections, namely add and update.

Collection add method: is to add the element to be passed in to the collection as a whole, for example:

Collection update method: is to split the element to be passed in, and do Pass the individual into the collection, for example:

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