Dictionary object to decision tree in Pydot

Question

I have a dictionary object as such:

menu = {\'dinner\':{\'chicken\':\'good\',\'beef\':\'average\',\'vegetarian\':{\'tofu\':\'good\',\'salad\':{\'caeser\':\'b         


        

Answer 1

Your question isn't entirely clear to me, but the way of accessing a dictionary key's value in Python is simply:

dictionary[key]

That will return to you that key's value. If that key is not in the dictionary, it will return a KeyError, so if you are working with dictionaries and you're not sure if the key you're requesting will be in the dictionary, you have two options.

If-statement (preferred):

if key in dictionary:
    return dictionary[key]

Try-catch:

try:
    return dictionary[key]
except KeyError:
    pass

If you don't know the keys in your dictionary and you need to get them, you can simply call dictionary.keys() and it will return a list of all of the keys in the dictionary.

Getting a the value of a dictionary key will return an object that could even be another object. Thus, to find out the value of "tofu", for example, we'd do the following:

menu['dinner']['vegetarian']['tofu']
# returns value 'good'