Sequence tuple for Python

A tuple, like a list, belongs to a member of a sequence, but the difference is that it is an immutable sequence

Declaration of a tuple:

1. Empty tuple: ()

2, 1 members of the tuple: (1,) or 1,

3. Multiple members: (+) or

Note: When declaring tuples, parentheses are not required, but commas are important, and tuples declaring 1 members must have a comma

Tuple () method

Method Explanation: You can turn other sequences into tuples, and the Usage and list () are consistent

Common operations for other sequences, see

Http://www.cnblogs.com/gametesting/p/7161029.html

The use of basic functions, tuples can be replaced by the list

The meaning of the tuple existence:

1, tuples can be used as keys in the map

2, tuples are many built-in functions and methods as the return value

Sequence tuple for Python