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What are the basic knowledge of Python for beginners? many beginners are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can get something.

As a cross-platform computer programming language, Python has its own unique knowledge and technical aspects. To get started, you should master the concept of Python, the advantages and disadvantages of Python, the execution process of Python code, and the basic syntax of Python.

What basic knowledge should I learn first if I want to learn Python?

I. Overview of Python:

1.1.The characteristics of Python:

1. Python is an object-oriented language, and everything is an object in Python

2. Python is an interpretive language

3. Python is an interactive language, that is, it programs commands in the terminal.

4. Python is a cross-platform language [without operating system restrictions, Python code can be run on any operating system]

5. Python has a powerful and rich library, also known as glue language, which can easily combine modules written in other languages (mainly cAccord +).

1.2. advantages and disadvantages of Python:

1. Advantages:

A, easy to maintain and learn

B. extensive standard library [provides a large number of tools]

C, scalability

D, Python have corresponding interfaces for most databases [Mysql, sqlites3, MongoDB, Redis, etc.]

E. Support for GUI programming [graphical interface]

The grammar is simple and easy to learn.

2. Disadvantages:

Compared with C language, the code of Python runs slowly.

B, the code cannot be encrypted

1.3.The execution process of Python code:

General process: the source code is compiled into bytecode (.pyc)-> Python virtual machine-> executes the compiled bytecode-> Python virtual machine translates the bytecode into corresponding machine instructions (machine code).

When the Python program is running, the bytecode is first compiled and saved in memory. When the program is finished, the Python interpreter writes the bytecode objects in memory to the .pyc file.

The second time you run it, look for the .pyc file on your hard disk, and if you find it, load it directly, otherwise repeat the above process.

Advantages: no repetitive compilation, improve execution efficiency

Second, the basic syntax in Python:

2.1.Storage of variables in Python in memory

2.2, basic data types

2.3, keywords, identifiers, and built-in functions

2.4.The Python operator

2.5. statements in Python

Only when the foundation is laid can we continue to build up, so if we want to master a technology, we must figure out its basic knowledge.

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