
from __future__ import annotations

from collections.abc import Iterator
from typing import Generic, TypeVar

SCREAMING_SNAKE_CASE							:Any										=    TypeVar('T')





class 							UpperCAmelCase				(  Generic[T]  ):




			'''simple docstring'''





			def __init__(	self :			Optional[Any]							,A :			T			):
							__A             =			data
							__A             =			None







			def __str__(	self :			Optional[int]			):
							return f'''{self.data}'''





class 							UpperCAmelCase				(  Generic[T]  ):




			'''simple docstring'''





			def __init__(	self :			List[str]			):
							__A             =			None






			def __iter__(	self :			str			):
							__A             =			self.top
							while node:
											yield node.data
											__A             =			node.next






			def __str__(	self :			Optional[int]			):
							return "->".join([str(__UpperCAmelCase			) for item in self]			)






			def __len__(	self :			Any			):
							return len(tuple(iter(self			)			)			)






			def     UpperCamelCase_  (	self :			Optional[int]			):
							return self.top is None






			def     UpperCamelCase_  (	self :			List[Any]							,A :			T			):
							__A             =			Node(__UpperCAmelCase			)
							if not self.is_empty():
											__A             =			self.top
							__A             =			node






			def     UpperCamelCase_  (	self :			str			):


							if self.is_empty():
											raise IndexError("pop from empty stack"			)
							assert isinstance(self.top							,__UpperCAmelCase			)
							__A             =			self.top
							__A             =			self.top.next
							return pop_node.data






			def     UpperCamelCase_  (	self :			Optional[int]			):


							if self.is_empty():
											raise IndexError("peek from empty stack"			)

							assert self.top is not None
							return self.top.data







			def     UpperCamelCase_  (	self :			Tuple			):
							__A             =			None


if __name__ == "__main__":
					from doctest import testmod

					testmod()


from math import log

from scipy.constants import Boltzmann, physical_constants

SCREAMING_SNAKE_CASE							:Dict										=    300  # TEMPERATURE (unit = K)


def 						UpperCAmelCase      (     a_		,       a_		,       a_		,       )		->     float:







				"""simple docstring"""



				if donor_conc <= 0:
								raise ValueError("Donor concentration should be positive"						)
				elif acceptor_conc <= 0:
								raise ValueError("Acceptor concentration should be positive"						)
				elif intrinsic_conc <= 0:
								raise ValueError("Intrinsic concentration should be positive"						)
				elif donor_conc <= intrinsic_conc:
								raise ValueError(
								    "Donor concentration should be greater than intrinsic concentration"						)
				elif acceptor_conc <= intrinsic_conc:
								raise ValueError(
								    "Acceptor concentration should be greater than intrinsic concentration"						)
				else:
								return (
								    Boltzmann
								    * T
								    * log((donor_conc * acceptor_conc) / intrinsic_conc**2						)
								    / physical_constants["electron volt"][0]
								)


if __name__ == "__main__":
					import doctest

					doctest.testmod()
