[BUG] Missing `()` in `electronic_structure.boltztrap.BoltztrapAnalyzer.get_extreme.is_isotropic`

[DanielYang59]

Seemingly missing () in 744c7db:

pymatgen/src/pymatgen/electronic_structure/boltztrap.py

Lines 1457 to 1473 in bd9fba9

	def is_isotropic(x, isotropy_tolerance) -> bool:
	"""Internal method to tell you if 3-vector "x" is isotropic.
	Args:
	x: the vector to determine isotropy for
	isotropy_tolerance: tolerance, e.g. 0.05 is 5%
	"""
	if len(x) != 3:
	raise ValueError("Invalid input to is_isotropic!")
	st = sorted(x)
	return bool(
	all([st[0], st[1], st[2]])
	and (abs((st[1] - st[0]) / st[1]) <= isotropy_tolerance)
	and (abs(st[2] - st[0]) / st[2] <= isotropy_tolerance)
	and (abs((st[2] - st[1]) / st[2]) <= isotropy_tolerance)
	)

- and (abs(st[2] - st[0]) / st[2] <= isotropy_tolerance) 
+ and (abs((st[2] - st[0]) / st[2]) <= isotropy_tolerance) 

i.e.:

- abs(a) / b <= tol
+ abs(a / b) <= tol

Otherwise any vector with a negative z component would be considered isotropic along z direction.

Can you please comment on this? @computron