Power Operator in PYTHON

Question

>>> -2 ** 4
-16 #Here, -(2**4) = -(16) = -16
>>> 4**-2
0.0625 #Here, execution ??
mathematics : 1/4^2 = 1/16 = 0.0625.
Please Explain.

Answer 1

Tht's because it's a negative power, so 4**-2=1/4**2, but if you power a negative number, that doesn't happen. The powers aren't conmutative bro

Answer 2

Python documentation says:
The power operator ** binds less tightly than an arithmetic or bitwise unary operator on its right, that is, 2**-1 is 0.5.

Answer 3

why we can't write that:
print(2 ** 1.5)
Gives us error