python_基础知识回忆_1

Posted 2021-01-05 caochucheng

KeyWord :  Pycharm2018.02   Python 3.7  

说明：

本篇并非文章，内容较多，结构未做整理，   以模块写，尽量保证每个模块内容完整性。

模块以分割线划分，尽量格式保持一致。   内容多次写入以及更新，会有局部有重复。

 

 

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1.三元运算

result = value1  if 条件 else value2 

 

eg.

a = 1    b = 2     c = 3

result = a if a>b else c

print(result)

>> 3

说明：三元运算主要是简单方便，使用时注意其格式。

 

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 2.bytes与string 之间的转换

 bytes 与string

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