extract list from XML (xmldom) in python

data ="
 aaa
 bbb
 ccc
 ddd
 eee
"


from xml.dom.minidom import parse, parseString

#data is xml formatted string 

dom3 = parseString( data )   #make dom object
tagList = dom3.getElementsByTagName("tag1")  #select list "tag1"

txt = tagList[0].firstChild.nodeValue  #first node->txtNode->nodeValue
print txt

===result==========
aaa

How to clear console in python

# # Screen clear 

# You can use it when you make  a console type.

import os
if os.name == "posix":
   os.system('clear')   # not MS-series
elif os.name in ("nt", "dos", "ce"):
   os.system('CLS')   #  MS-series --> DOS/Windows

python formating datetime

from datetime import datetime
dt = datetime.now()
print dt.strftime("%Y.%m.%d %H.%M.%S")

#  output #
2012.01.13 00.03.01

python decode string.

json.loads(data)  #when you meet some charset errors

json.loads(data.decode("utf-8"))