Python bytes 和 string 相互转换 - Python零基础入门教程

ゝ一世哀愁。 2022-10-08 02:27 223阅读 0赞

*  一.Python bytes 和 string 区别
 *  二.Python string 转 bytes
 *  三. Python bytes 转 string
 *  四.猜你喜欢

> 基础 Python 学习路线推荐 : [Python 学习目录][Python] >> [Python 基础入门][Python 1]

## 一.Python bytes 和 string 区别 ##

*  1.\*\*[Python bytes][] **也称字节序列，并非字符。取值范围 0 <= bytes <= 255，输出的时候最前面会有字符 b 修饰；**[string ][string]\*\*是 [Python][Python 2] 中字符串类型;
 *  **2.bytes 主要是给在计算机看的，string 主要是给人看的；**
 *  **3.string 经过编码 encode ，转化成二进制对象，给计算机识别；bytes 经过解码 decode ，转化成 string ，让我们看，但是注意反编码的编码规则是有范围, \\xc8 就不是 utf8 识别的范围；**

# !usr/bin/env python
    # -*- coding:utf-8 _*-
    """
    @Author:猿说编程
    @Blog(个人博客地址): www.codersrc.com
    @File:Python bytes 和 string 相互转换.py
    @Time:2021/04/29 08:00
    @Motto:不积跬步无以至千里，不积小流无以成江海，程序人生的精彩需要坚持不懈地积累！
     
    """
    
    if __name__ == "__main__":
        # 字节对象b
        b = b"www.codersrc.com"
        # 字符串对象s
        s = "www.codersrc.com"
        print(b)
        print(type(b))
        print(s)
        print(type(s))
    
    
    '''
    输出结果：
    
    b'www.codersrc.com'
    <class 'bytes'>
    www.codersrc.com
    <class 'str'>
    '''

## 二.Python string 转 bytes ##

**[string 经过编码 encode 转化成 bytes][string _ encode _ bytes]，示例代码如下:**

# !usr/bin/env python
    # -*- coding:utf-8 _*-
    """
    @Author:猿说编程
    @Blog(个人博客地址): www.codersrc.com
    @File:Python bytes 和 string 相互转换.py
    @Time:2021/04/29 08:00
    @Motto:不积跬步无以至千里，不积小流无以成江海，程序人生的精彩需要坚持不懈地积累！
    
    """
    
    
    if __name__ == "__main__":
        s = "www.codersrc.com"
        # 将字符串转换为字节对象
        b2 = bytes(s, encoding='utf8')  # 必须制定编码格式
        # print(b2)
    
        # 字符串encode将获得一个bytes对象
        b3 = str.encode(s)
        b4 = s.encode()
        print(b3)
        print(type(b3))
        print(b4)
        print(type(b4))
    
    
    '''
    输出结果：
    
    b'www.codersrc.com'
    <class 'bytes'>
    b'www.codersrc.com'
    <class 'bytes'>
    
    '''

## 三. Python bytes 转 string ##

[ **bytes 经过解码 decode 转化成 string**][string _ encode _ bytes] **，示例代码如下:**

if __name__ == "__main__":
        # 字节对象b
        b = b"www.codersrc.com"
        print(b)
        b = bytes("猿说python", encoding='utf8')
        print(b)
        s2 = bytes.decode(b)
        s3 = b.decode()
        print(s2)
        print(s3)
    
    
    '''
    输出结果：
    
    b'www.codersrc.com'
    b'\xe7\x8c\xbf\xe8\xaf\xb4python'
    猿说python
    猿说python
    '''

## 四.**猜你喜欢** ##

1.  [Python for 循环][Python for]
2.  [Python 字符串][string]
3.  [Python 列表 list][Python _ list]
4.  [Python 元组 tuple][Python _ tuple]
5.  [Python 字典 dict][Python _ dict]
6.  [Python 条件推导式][Python 3]
7.  [Python 列表推导式][Python 4]
8.  [Python 字典推导式][Python 5]
9.  [Python 函数声明和调用][Python 6]
10. [Python 不定长参数 \*argc/\*\*kargcs][Python _ _argc_kargcs]
11. [Python 匿名函数 lambda][Python _ lambda]
12. [Python return 逻辑判断表达式][Python return]
13. [Python 字符串/列表/元组/字典之间的相互转换][Python 7]
14. [Python 局部变量和全局变量][Python 8]
15. [Python type 函数和 isinstance 函数区别][Python type _ isinstance]
16. [Python is 和 == 区别][Python is _ _]
17. [Python 可变数据类型和不可变数据类型][Python 9]
18. [Python 浅拷贝和深拷贝][Python 10]

未经允许不得转载：[猿说编程][Link 1] » [Python bytes 和 string 相互转换][string _ encode _ bytes]

[Python]: https://www.codersrc.com/python
[Python 1]: https://www.codersrc.com/pythonsimple
[Python bytes]: https://www.codersrc.com/archives/6298.html
[string]: https://www.codersrc.com/archives/4996.html
[Python 2]: https://www.codersrc.com/
[string _ encode _ bytes]: https://www.codersrc.com/archives/6310.html
[Python for]: https://www.codersrc.com/archives/4953.html
[Python _ list]: https://www.codersrc.com/archives/5061.html
[Python _ tuple]: https://www.codersrc.com/archives/5088.html
[Python _ dict]: https://www.codersrc.com/archives/5114.html
[Python 3]: https://www.codersrc.com/archives/5346.html
[Python 4]: https://www.codersrc.com/archives/5359.html
[Python 5]: https://www.codersrc.com/archives/5377.html
[Python 6]: https://www.codersrc.com/archives/5405.html
[Python _ _argc_kargcs]: https://www.codersrc.com/archives/5443.html
[Python _ lambda]: https://www.codersrc.com/archives/5756.html
[Python return]: https://www.codersrc.com/archives/5759.html
[Python 7]: https://www.codersrc.com/archives/5137.html
[Python 8]: https://www.codersrc.com/archives/5156.html
[Python type _ isinstance]: https://www.codersrc.com/archives/5214.html
[Python is _ _]: https://www.codersrc.com/archives/5288.html
[Python 9]: https://www.codersrc.com/archives/5271.html
[Python 10]: https://www.codersrc.com/archives/5492.html
[Link 1]: https://www.codersrc.com