Python snippets - Python代码片段

python-snippets.py

## 通过URL下载图片
import urllib2
open('/tmp/google-logo.gif','wb').write(urllib2.urlopen('http://www.google.com/images/logo_sm.gif').read()) 


## python profile : cProfile
python -m cProfile  xxx.py 
python -m timeit xxx.py  | python -m timeit -s "code here"


## 计算 sum([1,2,...,100])
s =sum(crange(101))  | s = (1+100)*100/2   #算法的力量