程序人生►Python

Python快速入门

基础语法

冒号+缩进：Python语法功能的一部分，表达代码的所属关系
冒号+缩进是语法的一部分，缩进不正确程序运行错误
冒号+缩进是表达代码间包含和层次关系的唯一方式
只需要所有缩进长度一致即可，可采用N个空格或Tab，建议4个空格

·变量的使用无需定义，可以直接使用
·变量的赋值：使用等号（=）为变量赋值

流程控制

略

数据类型

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（2）数字类型：浮点数类型
·与数学中的实数含义相同，带有小数及小数的数字，存在取值范围
·浮点数包括常规方法和科学计数法2种方式表示
·如：0.0043=4.3e-3科学计数法：e表示a*10b

（3）数字类型：复数类型
·与数学中的复数概念相同，定义j=V-I，复数表示为a+bj
·z=a+bj，a是实部，b是虚部，a和b都是浮点数·z.real获得z的实部，z.imag获得z的虚部

（4）字节类型：字符串类型
·由0个或多个字符组成的有序字符序列
·字符串由一对单引号或一对双引号表示，如：“字符串”或‘字符串
·字符串是字符的有序序列，可以用序号访问，如：“字符串“[1]=“符”

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组合类型

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字符串操作

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不确定尾数

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字节串处理方法

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循环完成奖励

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库引用

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异常处理

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else奖励 python特色…..

lambda/函数

使用globa保留字在函数内部声明并使用全局变量

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组合数据类型

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集合

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序列

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字典

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组合类型操作函数

集合

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元组

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####　列表

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字典

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文件操作

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面向对象

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类似java static

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##　封装

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形式上的私有

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多态

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继承

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运算符重载

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对象引用

深拷贝:

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类进阶

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累的装饰器:

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自定义异常:

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名称修饰:

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最小空类

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Python计算生态

标准库

time

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random

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re

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match从开始进行匹配

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os

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fielcmp

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sys

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getopt

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第三方库

第三方库安装

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jieba库

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深入理解import系统

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Python进阶语法

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上下文管理器

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迭代器

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生成器

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装饰器

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异步协程

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