Dictionary question from lesson

Question

it gets the 3 from position 4, but returns a 5 for position 7 as it's not set? right?

Answer 1

python dictionary get method returns a value of the given key is present, otherwise it returns default value that you supply.

d.get(4,0)

returns d[4] if 4 is present as a key, otherwise it returns zero. if you directly access d[4], you will get a key error is if key is not present in the dictionary.

Answer 2

In Python get method work like this...
get(key , value by defalut)
so if the key is present in the dictionary it will return it's value
but if it is not present it uses the default value provided...
for eg:
In ur case the dictionary must be having key 4 but key 7 will not be there in the dictionary...
so what ur saying is happening....😀

Answer 3

Possibly. Hard to say without seeing what you're seeing. Post up your code if you don't mind.

Most languages would give you an "index out of range" error, but I can't remember if Python does that or not, or if it simply grabs the last element. I haven't read Python documentation since Python 2 and that was ages ago now so my memory gets the best of me. If I can see the code though, I can tell you with 100% certainty.

Answer 4

it was the lesson introducing dictionaries in python 3, print(dic.get(4,0)+dic.get(7,5) I think something like that... (my hands are so cold)

Answer 5

thanks ravi, just making sure!

Answer 6

thanks DT!