Python异常模块traceback用法实例分析

import traceback
try:
  raise SyntaxError, "traceback test"
except:
  traceback.print_exc()

import traceback
import StringIO
try:
  raise SyntaxError, "traceback test"
except:
  fp = StringIO.StringIO()  #创建内存文件对象
  traceback.print_exc(file=fp)
  message = fp.getvalue()
  print message

import traceback
import sys
def tracebacktest():
  raise SyntaxError, "traceback test"
try:
  tracebacktest()
except:
  info = sys.exc_info()
  for file, lineno, function, text in traceback.extract_tb(info[2]):
    print file, "line:", lineno, "in", function
    print text
  print "** %s: %s" % info[:2]

#!/usr/bin/python
import sys
def division(a=1, b=1):
  if b==0:
     print 'b eq 0'
     sys.exit(1)
  else:
     return a/b

#!/usr/bin/python
import sys
import traceback
import test1
a=10
b=0
try:
  print test1.division(a,b)
except:
  print 'invoking division failed.'
  traceback.print_exc()
  sys.exit(1)

execution python-2.5.1/python (enodeb/linux)
b eq 0
invoking division failed.
Traceback (most recent call last):
 File "test2.py", line 10, in <module>
  test1.division(a,b)
 File "/home/fesu/test1.py", line 6, in division
  sys.exit(1)
SystemExit: 1