File to dict

[Glauco]

david ha scritto:
> On Fri, 07 Dec 2007 16:46:56 +0100, Glauco wrote:
> 
>> mrkafk at gmail.com ha scritto:
>>> Hello everyone,
>>>
>>> I have written this small utility function for transforming legacy file
>>> to Python dict:
>>>
>>>
>>> def lookupdmo(domain):
>>>         lines = open('/etc/virtual/domainowners','r').readlines() lines
>>>         = [ [y.lstrip().rstrip() for y in x.split(':')] for x in
>>> lines]
>>>         lines = [ x for x in lines if len(x) == 2 ] d = dict()
>>>         for line in lines:
>>>                 d[line[0]]=line[1]
>>>         return d[domain]
>>>
>>>
>> cache = None
>>
>> def lookup( domain ):
>>     if not cache:
>>        cache = dict( [map( lambda x: x.strip(), x.split(':'))  for x in
>> open('/etc/virtual/domainowners','r').readlines()])
>>     return cache.get(domain)
>>
> 
>>>> lookup(1)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "<stdin>", line 2, in lookup
> UnboundLocalError: local variable 'cache' referenced before assignment
> 
> You miss the:
> def lookup(domain):
> 	global cache
> 	...
> 
> bye

yezzz!

you can use global or static


Gla