Python 0 Basic Primer (8)-------tuple tuples

An immutable sequence of tuple tuples. Contains arbitrary objects. can be nested arbitrarily. Accessed through the following table. No support for in-situ changes

Immutable refers to not supporting in-situ changes, nor appending elements and extension elements like lists

Syntax: t = () parentheses represent tuples

Problem:

If we write T = (' Mike ') directly. This will be treated as a string, and you want to declare that the tuple needs to write T = ("Mike")

When assigning tuples, parentheses can be omitted.

The tuple () function converts an iterative sequence into a tuple

Access to tuples is consistent with list access

Some other actions: (The following operation produces a new object)

The common operation of tuples is consistent with the general operation of the list, such as:

T in Tuple1 an element inside a tuple

T in Tuple1 an element is not inside a tuple

Tuple1 + tuple2

Tuple1 * 2

Tuple[index]

tuple[I:j]

tuple[i:j: K]

Len (tuple) tuple length

MIN (tuple) Minimum value

Max (tuple) maximum value

SUM (tuple) Total

Tuple.index (x) The first occurrence of an element in a tuple subscript

Tuple.count (x) an element appears several times

Extended:

A, B = 5, 10 This is the assignment of 2 variables respectively. Instead of declaring a tuple

The value of the interchange A and B can be so sub-written A, B = B, a

Python 0 Basic Primer (8)-------tuple tuples