[Python] What explains pattern matching in Python not matching for 0.0, but matching for...

I would like to understand how pattern matching works in Python. When I use matching with a type like float(), it matches 12.0, but when I use it with 0.0, it doesn't. I wonder why.

I am new to pattern matching in Python, and I have been playing with it. I tried to match 12.0 with float values, as shown below.

>>> t = 12.0
>>> match t:
... case 13.0:
... print("13")
... case 12.0:
... print("12")
...
12
>>> t = 12.0
>>> match t:
... case float():
... print("13")
... case 12.0:
... print("12")
...
13
>>> t = 12.0
>>> match t:
... case 0.0:
... print("13")
... case 12.0:
... print("12")
...
12
>>> float()
0.0
>>> type(float())
<class 'float'>
>>> 13.0 == float()
False
>>>


I am confused by the results. float() seems the same as 0.0 to me, so I would expect that if 12.0 matches float(), it would also match 0.0.

I am happy it's not the case, as I want to match against types in some cases, but I would like to understand why this happens.

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