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python hidden features

from http://stackoverflow.com/questions/101268/hidden-features-of-python
http://www.okpython.com/bbs/thread-3434-1-1.html
http://www.okpython.com/bbs/thread-3436-1-2.html
http://www.okpython.com/bbs/thread-3437-1-2.html
http://www.okpython.com/bbs/thread-3438-1-1.html
http://www.okpython.com/bbs/thread-3439-1-1.html
http://www.okpython.com/bbs/thread-3440-1-1.html
http://www.okpython.com/bbs/thread-3441-1-1.html
#74 Ì«ÀÁ¶ø²»Ô¸¶Ô×ֵ佸Ðгõʼ»¯£¿Ã»ÎÊÌ⣡
# n Python > 2.3:

from collections import defaultdict
In Python <= 2.3:

def defaultdict(type_):
class Dict(dict):
def __getitem__(self, key):
return self.setdefault(key, type_())
return Dict()
In any version:

d = defaultdict(list)
for stuff in lots_of_stuff:
d[stuff.name].append(stuff)


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#strcpy(sStr1,sStr2)
sStr1 = 'strcpy'
sStr2 = sStr1
sStr1 = 'strcpy2'
print sStr2
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#strcat(sStr1,sStr2)
sStr1 = 'strcat'
sStr2 = 'appen ......

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include:D:\PYTHON31\INCLUDE
lib:D:\PYTHON31\LIBS
#include "stdafx.h"
#include "python.h"
int main(int argc, char* argv[])
{
 Py_Initialize() ;
 PyRun_SimpleString("print('Hello')");
 //PyRun_SimpleString("print(dir())");
 Py_Finalize();& ......

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>>> s = datetime.datetime(2009,1,1)
>>> time.mktime(s.timetuple())
1230739200.0
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>>> import time
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from http://blog.alexa-pro.cn/?p=189
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print os.listdir('..')
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[a,b,c,d]
2: os.path.walk(path,visit,arg)
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callback(arg,dir,fileList)
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