Python Tuples: Complete Usage Guide

Tuples are an ordered and immutable data structure, with the following usage methods:

1. Create a tuple: Use parentheses () to create a tuple, which can include any number of elements.

my_tuple = (1, 2, 3, 4, 5)

1. Accessing tuple elements: You can access elements in a tuple using indexes, which start from 0.

print(my_tuple[0])  # 输出：1

1. Sliced tuple: You can use slicing to obtain a subset of a tuple.

print(my_tuple[1:3])  # 输出：(2, 3)

1. The immutability of tuples: elements in tuples cannot be modified, deleted, or added.

my_tuple[0] = 10  # 报错：TypeError: 'tuple' object does not support item assignment

1. Traverse the tuple: You can use a for loop to iterate over the elements in the tuple.

for item in my_tuple:
    print(item)

1. Concatenating tuples: You can use the + operator to concatenate tuples.

new_tuple = my_tuple + (6, 7, 8)
print(new_tuple)  # 输出：(1, 2, 3, 4, 5, 6, 7, 8)

1. Searching for elements: You can use the ‘in’ operator to check if a tuple contains a certain element.

print(3 in my_tuple)  # 输出：True

1. To obtain the length and number of elements in a tuple, you can use the len() function.

print(len(my_tuple))  # 输出：5

In general, tuples are a convenient data structure for storing and accessing data, especially suited for storing a group of related data items. Since tuples are immutable, they ensure the safety and consistency of the data.