Dynamic Keyword Arguments in Python?

Question

Does python have the ability to create dynamic keywords?

For example:

qset.filter(min_price__usd__range=(min_price, max_price))

I w

Answer 1

You can easily do this by declaring your function like this:

def filter(**kwargs):

your function will now be passed a dictionary called kwargs that contains the keywords and values passed to your function. Note that, syntactically, the word kwargs is meaningless; the ** is what causes the dynamic keyword behavior.

You can also do the reverse. If you are calling a function, and you have a dictionary that corresponds to the arguments, you can do

someFunction(**theDictionary)

There is also the lesser used *foo variant, which causes you to receive an array of arguments. This is similar to normal C vararg arrays.