Python3基础 iter+next 进行迭代时超出了范围 产生StopIteration异常

 

•        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]: my_str = "hello"

In [2]: it = iter(my_str)

In [3]: next(it)
Out[3]: 'h'

In [4]: next(it)
Out[4]: 'e'

In [5]: next(it)
Out[5]: 'l'

In [6]: next(it)
Out[6]: 'l'

In [7]: next(it)
Out[7]: 'o'

In [8]: next(it)  # 注意
---------------------------------------------------------------------------
StopIteration                             Traceback (most recent call last)
<ipython-input-8-a16b3a550cc4> in <module>()
----> 1 next(it)  # 注意

StopIteration: 

In [9]: 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

 

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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。

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