Python characteristic :1、python It's a completely object-oriented language .
Python Advantages and disadvantages :
Python The advantages of :1、 Simple 、 studies of the Book of Changes .
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Python The shortcomings of :1、 The running speed is not ideal .
Python The basic concept of source program :
Python Novice error for :1、 Hand error .
2、 There will be more than one print Write in a line .
Be careful :python Is a very strict format programming language , For now , Do not precede each line of code with a space .
Python notes : Use... For single line comments #.
Multi line comment “““””” Or three single quotes .
Arithmetic operator :
Priority of arithmetic operators :1、 First multiply, then divide, then add or subtract .
The arithmetic priority is arranged from high to low :