Biggest value of (not all) dictionary keys in Python

user_5364617 0
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What's the best way to get the biggest value of only the keys x, y, w and z in the dictionary above using Python?

my_dict = {"a":0, "b":5, "c":3, "x":4, "y":3, "w":2, "z": 1}

Thanks

dictionary python
3 Answers

You can try this:

my_dict = {"a":0, "b":5, "c":3, "x":4, "y":3, "w":2, "z": 1}
print(max(my_dict[i] for i in ["x", "y", "w", "z"]))

Output:

4
user_73267380

You could create a temporary dictionary to hold your values, then search in this dictionary for the value you want.

my_dict = {"a":0,"b":5,"c":3,"x":4, "y":3, "w":2, "z": 1}
newdict = {key:my_dict[key] for key in ['x', 'y','w','z']}
print(newdict[max(newdict, key=newdict.get)])
user_86835350

One possibility is to generate a list of tuples with keys and items of target elements

tmp_tpl =  [(i, my_dict[i]) for i in ["x", "y", "z", "w"]]

And then take the max of that:

out = max(tmp_tpl, key= lambda x:x[1])

Note that this will print a tuple of key and item which lets you identify which key did the maximum item correspond to.

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