Is there no switch function in Python

[Bengt Richter]

On Fri, 10 Sep 2004 22:20:13 -0400, Leif K-Brooks <eurleif at ecritters.biz> wrote:

>Bengt Richter wrote:
>> But IWT if we had named local code suites, we could exec them safely via a mapping. E.g.,
>> 
>>     def foo(var): # following is not legal code ;-)
>>         v1: print 'var is one'
>>         v2: # any suite should be ok, not just one-liners
>>             print 'var',
>>             print 'is two'
>>         switch = {1:v1, 2:v2}    
>>         exec switch.get(var, '')
>
>I'm probably missing something, but what's wrong with:
>
>def foo(var):
>	def v1(): print 'var is one'
>	def v2():
>		print 'var',
>		print 'is two'
>	switch = {1:v1, 2:v2}
>	switch.get(var, lambda:None)()

Sorry, I should have shown an example that really depends on local name space rebinding,
which the OP's example doesn't, and which was my main point. E.g., try getting the effect of:

       def foo(var): # following is not legal code ;-)
           v1: print 'var is one'
               var += 1
               status = 'incremented'
           v2: # any suite should be ok, not just one-liners
               print 'var',
               print 'is two'
               var *= 2
               status = 'doubled'
           switch = {1:v1, 2:v2}    
           exec switch.get(var, '')
           print 'var is now %r, and was %s.' % (var, status)
           return var, status

Regards,
Bengt Richter