为了发现更大的世界

_----by William Ernest Henley_

_Out of the night that covers me,_

_Black as the pit from pole to pole,_

_I thank whatever gods may be_

_For my unconquerable soul._

_In the fell clutch of circumstance_

_I have not winced nor cried aloud._

_Under the bludgeonings of chance_

_My head is bloody, but unbowed._

_Beyond this place of wrath and tears_

_Looms but the Horror of the shade,_

_And yet the menace of the years_

_Finds and shall find me unafraid._

_It matters not how strait the gate,_

_How charged with punishments the scroll,_

_I am the master of my fate:_

_I am the captain of my soul._

今天在知乎上看到这个问题——什么样的美打动过你？被@高山流囧回答中的这个The Earthrise图片戳中。

写csv的时候随便起了个名字，然后贴代码，出现下面的错误：

Traceback (most recent call last):
  File "D:\workspace\PyTest\csvTest\csv.py", line 1, in <module>
    import csv
  File "D:\workspace\PyTest\csvTest\csv.py", line 3, in <module>
    writer = csv.writer(file('your.csv', 'wb'))
AttributeError: 'module' object has no attribute 'writer'

显然是import问题，可是csv模块是python本身集成的。google之，原来是文件名的问题。
随手把文件名起了csv.py，所以成了自身import自身

参考：http://www.daniweb.com/software-development/python/threads/425633/pythoncsv-module-object-has-no-attribute-writer

传统除法

如果是整数除法则执行地板除，如果是浮点数除法则执行精确除法。

>>>1/2
0
>>>1.0/2.0
0.5

精确除法

除法总是会返回真实的商，不管操作数是整形还是浮点型。执行from future import division 指令就可以做到这一点。

>>>from __future__ import division
>>>1/2
0.5
>>>1.0/2.0
0.5

安装openpyxl遇到下面的错误：

ImportError: No module named setuptools

此种情况只要安装下setuptools模块即可 1.官方下载[https://pypi.python.org/pypi/setuptools/0.9.8](https://pypi.python.org/pypi/setuptools/0.9.8) 2.安装模块

C:\setuptools-0.9.8>python setup.py install

3.继续安装openpyxl能够顺利进行

C:\openpyxl-1.6.2>python setup.py install
running install
running bdist_egg