What are tuples and collections in python

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One, tuple tuple

Tuple is an ordered data structure, similar to list, but its content cannot be changed.

Compared with list, the data stored in tuple is more secure because it is immutable.

It is common to use tuple to assign values to multiple variables in python.

Two, gather set

A collection is an unordered data structure that can be thought of as a dictionary with only key.

Like key in the dictionary, the elements of the collection must be immutable data types, such as str,int,float,tuple, and so on, not mutable data types such as list,set,dict.

Set is often used in python to realize the algorithms of removing repetitive elements, finding intersection, union, complement and so on.

Third, thinking practice

11A = 2; b = 3; how to use tuple's feature of assigning values to multiple variables to interchange the values of an and b with one statement? (reply keyword python11 for reference answer)

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