python

python2.6/MySQLdb/__init__.py:34: DeprecationWarning: the sets module is deprecated from sets import ImmutableSet

Posted by bower on November 19, 2009
linux/ubuntu, python / No Comments

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/var/lib/python-support/python2.6/MySQLdb/__init__.py:34: DeprecationWarning: the sets module is deprecated from sets import ImmutableSet

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tornado-0.2 web server 实时服务器,下载,安装,hello world

Posted by bower on November 17, 2009
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Tornado is an open source version of the scalable, non-blocking web server and tools that power FriendFeed. The FriendFeed application is written using a web framework that looks a bit like web.py or Google’s webapp, but with additional tools and optimizations to take advantage of the underlying non-blocking infrastructure.

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tornado documentation tornado web server文档, 翻墙所得

Posted by bower on November 17, 2009
linux/ubuntu, python / 1 Comment

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Go语言更名Issue 9?

Posted by bower on November 17, 2009
living on earth, python / No Comments

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Go语言更名Issue 9?

2009年11月13日 Continue reading…

python 复制,移动文件

Posted by bower on August 11, 2009
python / No Comments

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import shutil
shutil.copyfile(‘data.db’, ‘archive.db’)
shutil.move(‘/build/executables’, ‘installdir’)

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python 星号

Posted by bower on August 10, 2009
python / No Comments

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F(*arg1)
它以一个*加上形参名的方式来表示这个函数的实参个数不定,可能为0个也可能为n个。注意一点是,不管有多少个,在函数内部都被存放在以形参名为标识符的tuple中。
>>> def a(*x):
if len(x)==0:
print ‘None’
else:
print x
>>> a(1)
(1,)        #存放在元组中
>>> a()
None
>>> a(1,2,3)
(1, 2, 3)
>>> a(m=1,y=2,z=3)

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python 随机字符串 数字和字母混合任意个数

Posted by bower on August 05, 2009
python / No Comments

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def getrandomstring(n):
basestring = ‘abcdefghijklmnopqrstuvwxyz1234567890_ABCDEFGHIJKLMNOPQRSTUVWXYZ’
basestring = basestring * 4
return string.join(random.sample(basestring, n)).replace(” “,”);

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python 随机数与随机字符串

Posted by bower on August 05, 2009
python / No Comments

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随机整数:
>>> import random
>>> random.randint(0,99)
21

随机选取0到100间的偶数:
>>> import random
>>> random.randrange(0, 101, 2)
42

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python 除法

Posted by bower on August 05, 2009
python / No Comments

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刚才写程序发现一个有趣的事,用python写了一个除法表达式,类似下面这个:
print 2/3
打印出的结果是0,而不是0.66666

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python time模块 格式化输出时间

Posted by bower on August 05, 2009
python / No Comments

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time.strftime(…)
strftime(format[, tuple]) -> string
将指定的struct_time(默认为当前时间),根据指定的格式化字符串输出
python中时间日期格式化符号:
%y 两位数的年份表示(00-99)
%Y 四位数的年份表示(000-9999)
%m 月份(01-12)
%d 月内中的一天(0-31)
%H 24小时制小时数(0-23)
%I 12小时制小时数(01-12)
%M 分钟数(00=59)
%S 秒(00-59)

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yum : Lock table is out of available locker entries 解决办法

Posted by bower on June 08, 2009
linux/ubuntu, python / No Comments

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在用yum安装 mysqldb的时候 出现了错误

yum install MySQL-python (注意大小写)

error: Lock table is out of available locker entries

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