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from decimal import Decimal
½øÈ¥Ö®ºó·¢ÏÖ³ö´íµÄλÖÃÔÚdecimal.pyÎļþÖÐ5833Ðгö´í
import re
_parser = re.compile(r""" # A numeric string consists of:
# \s*
(?P<sign>[-+])? # an optional sign, followed by either...
(
(?=\d|\.\d) # ...a number (with at least one digit)
(?P<int>\d*) # having a (possibly empty) integer part
(\.(?P<frac>\d*))? # followed by an optional fractional part
(E(?P<exp>[-+]?\d+))? # followed by an optional exponent, or...
|
Inf(inity)? # ...an infinity, or...
|
(?P<signal>s)? # ...an (optionally signaling)
NaN # NaN
(?P<diag>\d*) # with
Ïà¹ØÎĵµ£º
def
subString
(s,
length):
us = unicode(s, 'utf-8
')
gs =
us.encode('gb2312
')
n = int(length)
t = gs[:n]
while True
:
try
:
&nb ......
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by AKara 2009-05-17 @ http://blog.csdn.net/akara @ akaras@163.com
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