bvidinli wrote:
i use dictionaries to hold some config data,
such as:
conf={'key1':'value1','key2':'value2'}
and so on...
when i try to process conf, i have to code every time like:
if conf.has_key('key1'):
if conf['key1']<>'':
other commands....
this is very annoying.
in php, i was able to code only like:
if conf['key1']=='someth'
in python, this fails, because, if key1 does not exists, it raises an exception.
MY question:
is there a way to directly get value of an array/tuple/dict item by key,
as in php above, even if key may not exist, i should not check if key exist,
i should only use it, if it does not exist, it may return only empty,
just as in php....
i hope you understand my question...
If I understand correctly you want default values for non-existing keys.
There are two ways for achieving this:
Way 1: use the get() method of the dict object:
conf.get(key, default)
which is the same as:
conf[key] if key in conf else default
Way 2: make conf a defaultdict instead of a dict, the documentation is
there:
http://docs.python.org/lib/defaultdict-objects.html
Hope this helps,
RB
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