对python中的try、except、finally 执行顺序详解

def test1():
  try:
   print('to do stuff')
   raise Exception('hehe')
   print('to return in try')
   return 'try'
 except Exception:
   print('process except')
   print('to return in except')
   return 'except'
 finally:
   print('to return in finally')
   return 'finally'

test1Return = test1()
print('test1Return : ' + test1Return)

to do stuff
process except
to return in except
to return in finally
test1Return : finally

def test2():
  try:
   print('to do stuff')
   print('to return in try')
   return 'try'
 except Exception:
   print('process except')
   print('to return in except')
   return 'except'
 finally:
   print('to return in finally')
   return 'finally'

test2Return = test2()
print('test1Return : ' + test2Return)

to do stuff
to return in try
to return in finally
test2Return : finally

def test3():
  i = 0
 try:
   i += 1
 print('i in try : %s'%i)
   raise Exception('hehe')
 except Exception:
   i += 1
 print('i in except : %s'%i)
   return i
   finally:
   i += 1
 print ('i in finally : %s'%i )

print('test3Return : %s'% test3())

i in try : 1
i in except : 2
i in finally : 3
test3Return : 2

def test4():
  i = 0
 try:
   i += 1
 return i
  finally:
   i += 1
 print ('i in finally : %s'%i )
print('test4Return : %s' % test4())

i in finally : 2
test4Return : 1

def test5():
  for i in range(5):
   try:
     print('do stuff %s'%i)
     raise Exception(i)
   except Exception:
     print('exception %s'%i)
     continue
 finally:
     print('do finally %s'%i)
test5()

do stuff 0
exception 0
do finally 0
do stuff 1
exception 1
do finally 1
do stuff 2
exception 2
do finally 2
do stuff 3
exception 3
do finally 3
do stuff 4
exception 4
do finally 4