Why does the len of this dictionary say 3 and not 4? (Python)

Question

From Sololearn Python Data Structures, page shows this example and also states you can use len() on dictionaries.

pairs = {1: "apple",
"orange": [2, 3, 4],
True: False,
12: "True",
}

print(pairs.get("orange"))
print(pairs.get(7, 42))
print(pairs.get(12345, "not found"))
print(len(pairs))

Output:
[2, 3, 4]
42
not found
3

Shouldn't it be 4?

Edit: I think it has to do with the True:False entry, but I'm not sure why that is not being counted in the length.

Answer 1

You're one the right track: True is the same key as 1. True: False overwritten 1: "apple"
Test it by printing out the whole dictionary

Answer 2

LucaAntonieri

In some languages 1 means True and 0 means False.

So here True will override to 1 and False will override to 0

Answer 3

Also test this:
print(True, int(True))
print(1, bool(1))

Answer 4

Thanks, I tested it, but why is ''True the same key as 1'', why does True:False overwrite it?

Answer 5

True overwrites 1 because it comes later