0 Basic python-4.1 Python object introduction and standard type

Object, the core of object-oriented, and the core of Python

Python object has three properties

1. Identity: That is, ID, each object has an ID, through the ID (obj) to read, generally seldom use this value, so do not need to do too much of it

2. Type: Object holds what type of value, can be read by type (obj), the type itself is also an object, he returns not a string, but an object

Let's give one or two examples:

3. Value: object's data item

When an object is created, these three attributes are assigned, the first two are read-only, and the data items are variable

Python also has a series of built-in objects, which, in general, are sufficient for today's programming, if not enough or require special types of data storage, to build your own objects

Standard types of Python:

Integer shaping

Boolean Boolean type

float Float Type

Complex complex type, generally denoted by J, E denotes real number

String strings

List lists

Tuple tuples, similar arrays

Dictionary Dictionary similar to map

Right here, thank you.

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0 Basic python-4.1 Python object introduction and standard type