CODEWITHSUNDEEP
pythondictionary
Chenming Zhang
Chenming Zhang

Reputation: 2566

iterate at a function input in python

i need to transfer the values in a dict (dict1 in the example below) to a function in an element by element manner (func1 in the example below, the function can not be changed)

def func1(input1,input2,input3):
    print input1
    print input2
    print input3

dict1={"a":1,"b":2,"c":3}
keys=["a","b","c"]
func1(dict1["a"],dict1["b"],dict1["c"])

How can i improve the last line with the help of array keys? i have tried 

func1([dict[key] for key in keys])

and 

func1(dict[key] for key in keys)

Upvotes: 0

Views: 70

Answers (2)

Paul Panzer
Paul Panzer

Reputation: 53029

Since you were asking for improvements. You didn't leave much room for them but some might say that not creating a throw-away list might count as one:

func1(*(dict1[key] for key in keys))

Obviously, as improvements go this one is very minor.

Upvotes: 1

Taku
Taku

Reputation: 33714

Your func1([dict[key1] for key in keys]) almost worked, you just need to unpack it before sending it to the function using *

func1(*[dict1[key] for key in keys])

Upvotes: 5

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