Is it possible, in python, to update or initialize a dictionary key with a single command? -

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For example, say, I want to create a histogram, I like it: 
   
> To enter the hit = {} data: If the entry [ "Location"] in the hist: hit [entry ["location"]] + = 1 other: hit [entry ["location"]] = 1   
 depending on the existence of the probe Is there any way to check existence and start or update based on existing existence?   
 
 
 What you want here is a  defaultdict :  < To import the default entry hist = defaultdict (int) in data import from pre> : hit [entry ["location"]] = = 1   
  defaultdict < / Code> Default - Any entry that is not already present in dict, so for ints they start at 0 and you simply add one for each item.

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