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Welby Obeng
20,340 Pointsunderstanding **kwargs and dictionary
Please go to 6:42 and pause the video. I see you have self then **kwargs in the init method. From previous lesson I understand **kwargs means you can send a dictionary and it will use the key and value in the dictionary.
In your console I see you created an instance of the class using
jubjub = Monster(color='red', sound='tweet')
inst color='red', sound='tweet' a tuple? I thought a dictionary have {} around it?
3 Answers
William Li
Courses Plus Student 26,868 PointsYeah, exactly, what **kwargs does is just packing all the keyword arguments the function call received into a single variable kwargs, and it's a dictionary.
def foo(**kwargs):
return kwargs
print foo(keyword1 = "hello", keyword2 = "world)
## => {'keyword1':'hello', 'keyword2':'world'}
William Li
Courses Plus Student 26,868 PointsHi, Welby, I answered this question in quite a bit of detail in another forum post.
Let me know if you have any more question after going through that post.
Welby Obeng
20,340 PointsIt explains it better...one more thing...how does this relate to packing and unpacking?
Welby Obeng
20,340 Pointsgreat..I understand how packing is related...can you give me an example of unpacking?
Iain Diamond
29,379 PointsIf I understand it correctly, example in the video shows how to unpack the **kwargs variable.
def __init__(this, **kwargs):
this.hit_points = kwargs.get('hit_points', 1)
this.color = kwargs.get('color', 'yellow')
this.weapon = kwargs.get('weapon', 'sword')
this.sound = kwargs.get('sound', 'roar')