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Python Python Collections (2016, retired 2019) Dictionaries Packing and Unpacking Dictionaries

Posted by Kafe Hezam
Kafe Hezam
11,070 Points

Why when I try to pass a value to *arg it doesn't get passed to it.

I'm trying to catch second_color outside of the packing, and pass "I'm a tuple" to *args and print out both args and kwargs. Here's my example:

def color(second_color = None, *args, **kwargs): print(kwargs) print(args)
color(second_color= "Brown", "I'm a tuple", first_color= "Red", last_color= "Blue")

SyntaxError: positional argument follows keyword argument

1 Answer

Kent Åsvang
Kent Åsvang
18,823 Points
Kent Åsvang
Kent Åsvang
18,823 Points

You need to remove the "second_color"-keyword from your function-call. 

    color("Brown", "I'm a tuple", first_color= "Red", last_color= "Blue")

You can read about why here if you are interested

Also, remember that kwargs are dictionaries. So if you want to print them out you should use dict().items() and a for-loop: 

    for item in kwargs.items():
        print(item)

for the args you can just use a basic for-loop:

    for item in args:
        print(items)

I hope this helped