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         Python : 3.7.0         OS : Ubuntu 18.04.1 LTS        IDE : PyCharm 2018.2.4      Conda : 4.5.11   typesetting : Markdown   codecoder@Ubuntu:~$ source activate py37
(py37) coder@Ubuntu:~$ ipython
Python 3.7.0 (default, Jun 28 2018, 13:15:42) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.5.0 -- An enhanced Interactive Python. Type '?' for help.
In [1]: raise
---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
<ipython-input-1-9c9a2cba73bf> in <module>()
----> 1 raise
RuntimeError: No active exception to reraise
In [2]: exit
(py37) coder@Ubuntu:~$ source deactivate
coder@Ubuntu:~$ 
   resource 
 [文档] docs.python.org/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。
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