Python Learn how to create and base operations on the 15th day collection

A collection is a Python-unique list of data that can be analyzed by the collection, which is an unordered, unique data type that determines the uniqueness of the list, and the creation of the collection and basic common methods of operation.

1, creation of the collection

s={1,2,4}

You can also create a collection with Set ()

2, the basic operation method of the collection

s1={2,3,4,6}

S1.add (5) Add an element

S1.pop () randomly deletes an element

S1.remove (4) error occurs when a nonexistent data is present

S1.discard (4) No error occurs when a nonexistent data is present

S1.update ({)}) Extended Data collection

S1.clear () Clears collection data

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Python Learn how to create and base operations on the 15th day collection