python类的作用域的问题－－有趣的现象
这是limodou的ulipad的Debug.py模块，独立运行此模块，会出现异常。试图改正它后，又有一个错误。
类有属性和方法作用域的问题，还有初始化先后作用域的问题。一般我们很少碰到这样的问题。
声明一下：模块中出现的问题无损于程序的优秀性。这也是我要全文张贴的原因
# Programmer: limodou
# E-mail: limodou@gmail.com
#
# Copyleft 2006 limodou
#
# Distributed under the terms of the GPL (GNU Public License)
#
# UliPad is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
#
# $Id: Debug.py 1504 2006-09-02 04:08:43Z limodou $
DEBUG = True
import types
import sys
import traceback
import time
import os.path
class Debug:
def __init__(self, filename=os.path.abspath('debug.txt'), debug=None):
self.filename = filename
self.reset(filename)
self.debug = debug
def log(self, *args):
self.output(*args)
def info(self, *args):
self.output('[ INFO] -- ', *args)
def warn(self, *args):
self.output('[ WARN] -- ', *args)
def error(self, *args):
self.output(' -- ', *args)
def debug(self, *args):
self.output(' -- ', *args)
def traceback(self):
message = traceback.format_exception(*sys.exc_info())
self.output('', ''.join(message))
def time(self, *args):
self.output('[%s] -- ' % time.ctime(time.time()), *args)
def output(self, *args):
if self.is_debug():
#encoding = locale.getdefaultlocale()
encoding = 'utf-8'
out = open(self.filename, 'a')
for i in args:
if not type(i) in :
s= repr(i)
else:
s = i
if type(s) == type(u''):
out.write(s.encode(encoding))
else:
out.write(s)
out.write("\n")
out.close()
def reset(self, filename):
if self.is_debug():
open(filename, 'w')
self.filename = filename
def is_debug(self):
if not DEBUG:
return False
if self.debug is None:
return DEBUG
else:
return self.debug
debug = None
error = None
if __name__ == '__main__':
debug = Debug()
error = Debug(os.path.abspath('error.txt'))
debug.log('log')
debug.info('info')
debug.warn('warn')
debug.error('error')
debug.debug('debug')
http://blog.donews.com/ygao/aggbug/1048251.aspx
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