Python3 set set and data conversion functions

Set set is a sequence of unordered, non-repeating elements

The basic function is to test the membership and remove duplicate elements.

Use the brace {} or set () function to create a collection, note: Creating an empty collection must be set () instead of {}, because {} is used to create a new dictionary.

Add (): Increase the collection element

Copy (): Shallow copy

Clear (): Empty collection

Difference ():

Difference_update (): Deletes all elements in the current set that are contained in CSET

Discard (): remove element

Intersection (): Take intersection to create a new collection

Intersection_update (): Take intersection to update the original set set

Isdisjoint (): Determines no intersection, returns True, returns false

Issubset (): Determine if it is a subset

Issuperset (): Determines whether the parent set

Python3 set set and data conversion functions