Python 有权重的随机选择, Weighted Random Choice
import random def windex(lst):
'''an attempt to make a random.choose() function that makes weighted choices
accepts a list of tuples with the item and probability as a pair'''
wtotal = sum([x[1] for x in lst])
n = random.uniform(0, wtotal)
for item, weight in lst:
if n < weight:
break
n = n - weight
return item
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1.可执行程序
os.system('pgrep %s > %s' % (process, output))
pidfile = open("output", 'r')
totalpid = len(pidfile.readlines())
pidfile.close()
if totalpid == 0 :
&nbs ......
闲来无事, 玩玩python...
是采用有道翻译, 然后抓取网页的.
import re, urllib
url="http://dict.youdao.com/search?le=eng&q="
print ("input q to exit")
while 1:
word = raw_input(">>>")
if word=="q":
exit()
else:
word = word.replace(' ', '+')
url += word
u ......
threading — Higher-level threading interface
This module constructs higher-level threading interfaces on top of the lower level _thread module. See also the queue module.
The dummy_threading module is provided for situations where threading cannot be used because _thread is missing.
......
这是一个简单的表达式计算器, 不太懂用Tkinter写GUI, 参考了别人的代码
from __future__ import division
from Tkinter import Tk, Entry, Button, Label, mainloop
from tkFont import Font
def get_value ():
v = ''
try:
v = eval(text.get()) #use eval to calculate the vlaue of the text
except:
pa ......
谢了一个自动下载指定人的博客的脚本
这个脚本是用来下载csdn博客的
同样的方法可以下载一般其他网站的博客,如sina
有时页面访问会被拒绝,重新运行即可
这种程序是在分析了指定网站,我在这儿是csdn,之后编写出的
会牵涉到网页的编码问题,有时程序运行会因此终止
我自己的博客已经下载忘了
只是下载网页
使用网 ......