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#Èç¹ûΪ¿Õ£¬Ôòʲô¶¼²»×ö
if not L:
return
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if type(L[0])==type([]):
printList(L[0])
else:#Èç¹û²»ÊÇÁ´±í£¬½öÊä³öÔªËØ¼´¿É
print L[0]
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printList(L[1:]) >>> aList=['a',['b','c',['d','e']],'f',[],'g']
>>> printList(aList)
a
b
c
d
e
f
g
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#coding=utf-8
def buildConnectionString(params):
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