Python3基础 交换两个变量的值

  •        Python : 3.7.3
  •          OS : Ubuntu 18.04.2 LTS
  •         IDE : pycharm-community-2019.1.3
  •       Conda : 4.7.5
  •    typesetting : Markdown

code

coder@ubuntu:~$ source activate py37
(py37) coder@ubuntu:~$ ipython
Python 3.7.3 (default, Mar 27 2019, 22:11:17) 
Type 'copyright', 'credits' or 'license' for more information
IPython 7.5.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: def change(a, b): 
   ...:     return b, a 
   ...:                                                                         

In [2]: a = 10                                                                  

In [3]: b = 20                                                                  

In [4]: a, b = change(a, b)                                                     

In [5]: a,b                                                                     
Out[5]: (20, 10)

In [6]: # 另一种表达                                                            

In [7]: c = 30                                                                  

In [8]: d = 40                                                                  

In [9]: c, d = d, c                                                             

In [10]: c                                                                      
Out[10]: 40

In [11]: d                                                                      
Out[11]: 30

In [12]: exit                                                                   
(py37) coder@ubuntu:~$ conda deactivate
coder@ubuntu:~$ 

resource

  • [文档 - English] docs.python.org/3
  • [文档 - 中文] docs.python.org/zh-cn/3
  • [规范] www.python.org/dev/peps/pep-0008
  • [规范] zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/python_language_rules
  • [源码] www.python.org/downloads/source
  • [ PEP ] www.python.org/dev/peps
  • [平台] www.cnblogs.com
  • [平台] gitee.com


Python具有开源、跨平台、解释型、交互式等特性,值得学习。
Python的设计哲学:优雅,明确,简单。提倡用一种方法,最好是只有一种方法来做一件事。
代码的书写要遵守规范,这样有助于沟通和理解。
每种语言都有独特的思想,初学者需要转变思维、踏实践行、坚持积累。

原文地址:https://www.cnblogs.com/xingchuxin/p/11123317.html