书籍:《Python编程:从入门到实践》
输出
数值
int & float
type()
int()
![](https://img.haomeiwen.com/i1916100/68ee165ca335d7a3.png)
![](https://img.haomeiwen.com/i1916100/b80e1c18f14a3e81.png)
运算符
![](https://img.haomeiwen.com/i1916100/ca746b7abfd9f4b7.png)
![](https://img.haomeiwen.com/i1916100/fcbf228ad92df34b.png)
![](https://img.haomeiwen.com/i1916100/cf587f008791304b.png)
函数
使用之前先定义!!!
return vs print
return只能返回一个值,print可以无限执行,输出语句
![](https://img.haomeiwen.com/i1916100/1e4785acf6dbed85.png)
多参数与内置函数
![](https://img.haomeiwen.com/i1916100/63c98d25f26f2c9f.png)
列表
![](https://img.haomeiwen.com/i1916100/b39ed11baebe0f24.png)
方法
![](https://img.haomeiwen.com/i1916100/82a0e41d1f9091cf.png)
切片
![](https://img.haomeiwen.com/i1916100/801d78dfe226e189.png)
元组
![](https://img.haomeiwen.com/i1916100/5d21f86785fb6f47.png)
区分圆括号:
- 标准元组声明方式:声明元组
2.切割函数
3.元组可以返回,但返回的数据不一定是元组
字典
列表[] 元组() 字典{}
![](https://img.haomeiwen.com/i1916100/a03124a28c5cdd41.png)
条件判断
if
总结:if 外的语句都会执行
若if 后条件为真则执行,假则不执行
![](https://img.haomeiwen.com/i1916100/cb15b0390f75cb99.png)
else
![](https://img.haomeiwen.com/i1916100/c286aacb1f5c9a29.png)
elif
elif对逻辑要求高,从上而下执行,一旦成立,以下都不执行
![](https://img.haomeiwen.com/i1916100/89fba7f04076d127.png)
循环
for
![](https://img.haomeiwen.com/i1916100/3716699d8b94fd6f.png)
while
![](https://img.haomeiwen.com/i1916100/f20c1a95b7c6228d.png)
range
![](https://img.haomeiwen.com/i1916100/f2fb40c986095d07.png)
循环语句和条件判断的搭配
,end="" 不换行
字典的遍历
![](https://img.haomeiwen.com/i1916100/61c9afdedd5aabdf.png)
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