Marco-python-class notes 01-python

#！ /usr/bin/python

The first line: The interpreter that executes the script notification content to be opened;

Import Platform

The second line: Importing a Python module platform via import;

Print Platform.uname ()

The third line: print the execution result of the Uname method of the Platform module;

Finally give the script executable permission;

2:python scripts can be divided into: modules, statements, expressions, objects;

• The program has a modular structure
• Module contains statements
• Statement contains an expression
• expression creation and processing of an object

Note: Everything in Python is an object;

3: Expression is "something"; for example: 3+4

4: The statement is "doing something"; For example: print "3+4"

5: Features of statements: they change things;

6: The assignment statement changes the variable;

The 7:print statement changes the screen output;

Second: The language is divided into

Process oriented

The instruction is the center, the instruction processes the data, how to organize the code to solve the problem;

Object oriented

Data-centric, all the processing code around the data expansion, how to design data structures, organize and provide the data to allow processing operations;

Marco-python-class notes 01-python