- Python : 3.7.0
- OS : Ubuntu 18.04.1 LTS
- IDE : PyCharm 2018.2.4
- Conda : 4.5.11
- typesetting : Markdown
code
coder@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]: class MyClass:
...: def __str__(self):
...: return "MyClass__str__"
...: def __repr__(self):
...: return "MyClass__repr__"
...:
In [2]: test = MyClass()
In [3]: test
Out[3]: MyClass__repr__
In [4]: print(test) # 调用的是 __str__
MyClass__str__
In [5]: 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。