
'''simple docstring'''







import numpy as np
from PIL import Image

def 				_snake_case (		lowercase						)       ->       np.array:
				__a       :     Optional[int]								=	rgb[:, :, 0], rgb[:, :, 1], rgb[:, :, 2]
				return 0.2_9_8_9 * r + 0.5_8_7_0 * g + 0.1_1_4_0 * b

def 				_snake_case (		lowercase						)       ->       np.array:
				return (gray > 1_2_7) & (gray <= 2_5_5)

def 				_snake_case (		lowercase			,    lowercase						)       ->       np.array:
				__a       :     Optional[Any]								=	np.zeros_like(UpperCAmelCase_						)
				__a       :     Optional[Any]								=	np.zeros(
				    (image.shape[0] + kernel.shape[0] - 1, image.shape[1] + kernel.shape[1] - 1)						)

				# Copy image to padded image
				__a       :     Optional[Any]								=	image

				# Iterate over image & apply kernel
				for x in range(image.shape[1]						):
								for y in range(image.shape[0]						):
												__a       :     str								=	(
												    kernel * image_padded[y : y + kernel.shape[0], x : x + kernel.shape[1]]
												).sum()
												__a       :     Union[str, Any]								=	int(summation == 5						)
				return output


# kernel to be applied
__SCREAMING_SNAKE_CASE		:  Optional[Any]        =      np.array([[0, 1, 0], [1, 1, 1], [0, 1, 0]])

if __name__ == "__main__":
					# read original image
					__SCREAMING_SNAKE_CASE		:  int        =      np.array(Image.open(r'..\image_data\lena.jpg'))
					# Apply erosion operation to a binary image
					__SCREAMING_SNAKE_CASE		:  int        =      erosion(grayabinary(rgbagray(image)), structuring_element)
					# Save the output image
					__SCREAMING_SNAKE_CASE		:  Tuple        =      Image.fromarray(output).convert('RGB')
					pil_img.save('result_erosion.png')
"""simple docstring"""







_a	:	Optional[Any]=					{
    "+": lambda x, y: x + y,
    "-": lambda x, y: x - y,
    "*": lambda x, y: x * y,
    "/": lambda x, y: x / y,
}
def     __UpperCAmelCase							(       UpperCAmelCase_       :							List[Any]    )				->     List[Any]:

	'''simple docstring'''





	return c.isdigit()
def     __UpperCAmelCase							(       UpperCAmelCase_       :							int    )				->     List[Any]:

	'''simple docstring'''





	__snake_case     :				Dict 						=					[]

	# iterate over the string in reverse order
	for c in expression.split()[::-1]:
		# push operand to stack
		if is_operand(UpperCAmelCase_    ):
			stack.append(int(UpperCAmelCase_    )    )

		else:
			# pop values from stack can calculate the result
			# push the result onto the stack again
			__snake_case     :				Optional[Any] 						=					stack.pop()
			__snake_case     :				int 						=					stack.pop()
			stack.append(calc[c](UpperCAmelCase_     ,				UpperCAmelCase_    )    )

	return stack.pop()


# Driver code
if __name__ == "__main__":
	_a	:	Union[str, Any]=					"+ 9 * 2 6"
	print(evaluate(test_expression))

	_a	:	List[Any]=					"/ * 10 2 + 4 1 "
	print(evaluate(test_expression))





