Question

i have a question about the following code

 smaller={}
 for( dest in a[neigbour].keys())

    if(dest in smaller.keys() == False):
        print 'false'
    }

I can’t make this code print false.. am I doing something wrong? I wonder if I am doing the correct thing to check the statement dest in smaller.keys() == False

Answer 1

The oppisite of dest in smaller.keys() is dest not in smaller.keys(). No need to compare to False or True:

if (dest not in smaller.keys()):

Documentation for in and not in: http://docs.python.org/library/stdtypes.html#sequence-types-str-unicode-list-tuple-bytearray-buffer-xrange