

"""simple docstring"""





import numpy as np
import requests

def 						__SCREAMING_SNAKE_CASE						(   ):
	lowerCAmelCase__			:		Optional[Any]						       =			requests.get(
	    '''https://raw.githubusercontent.com/yashLadha/The_Math_of_Intelligence/'''
	    '''master/Week1/ADRvsRating.csv'''				)
	lowerCAmelCase__			:		Dict						       =			response.text.splitlines()
	lowerCAmelCase__			:		str						       =			[]
	for item in lines:
		lowerCAmelCase__			:		List[Any]						       =			item.split(''','''				)
		data.append(A_				)
	data.pop(0				)  # This is for removing the labels from the list
	lowerCAmelCase__			:		int						       =			np.matrix(A_				)
	return dataset

def 						__SCREAMING_SNAKE_CASE						(   A_		,  A_		,  A_		,  A_		,  A_				):
	lowerCAmelCase__			:		Optional[int]						       =			len_data

	lowerCAmelCase__			:		List[str]						       =			np.dot(A_		,  data_x.transpose()				)
	prod -= data_y.transpose()
	lowerCAmelCase__			:		Optional[int]						       =			np.dot(A_		,  A_				)
	lowerCAmelCase__			:		str						       =			theta - (alpha / n) * sum_grad
	return theta

def 						__SCREAMING_SNAKE_CASE						(   A_		,  A_		,  A_		,  A_				):
	lowerCAmelCase__			:		Tuple						       =			np.dot(A_		,  data_x.transpose()				)
	prod -= data_y.transpose()
	lowerCAmelCase__			:		Any						       =			np.sum(np.square(A_				)				)
	lowerCAmelCase__			:		Any						       =			sum_elem / (2 * len_data)
	return error

def 						__SCREAMING_SNAKE_CASE						(   A_		,  A_				):
	lowerCAmelCase__			:		Union[str, Any]						       =			10_00_00
	lowerCAmelCase__			:		Optional[Any]						       =			0.0_001_550

	lowerCAmelCase__			:		Optional[int]						       =			data_x.shape[1]
	lowerCAmelCase__			:		Dict						       =			data_x.shape[0] - 1

	lowerCAmelCase__			:		Optional[Any]						       =			np.zeros((1, no_features)				)

	for i in range(0		,  A_				):
		lowerCAmelCase__			:		int						       =			run_steep_gradient_descent(A_		,  A_		,  A_		,  A_		,  A_				)
		lowerCAmelCase__			:		Dict						       =			sum_of_square_error(A_		,  A_		,  A_		,  A_				)
		print(f'At Iteration {i + 1} - Error is {error:.5f}'				)

	return theta

def 						__SCREAMING_SNAKE_CASE						(   A_		,  A_				):
	lowerCAmelCase__			:		List[Any]						       =			sum(abs(y - predicted_y[i]				) for i, y in enumerate(A_				)				)
	return total / len(A_				)

def 						__SCREAMING_SNAKE_CASE						(   ):
	lowerCAmelCase__			:		List[Any]						       =			collect_dataset()

	lowerCAmelCase__			:		str						       =			data.shape[0]
	lowerCAmelCase__			:		List[Any]						       =			np.c_[np.ones(A_				), data[:, :-1]].astype(A_				)
	lowerCAmelCase__			:		Optional[int]						       =			data[:, -1].astype(A_				)

	lowerCAmelCase__			:		Tuple						       =			run_linear_regression(A_		,  A_				)
	lowerCAmelCase__			:		List[Any]						       =			theta.shape[1]
	print('''Resultant Feature vector : '''				)
	for i in range(0		,  A_				):
		print(f'{theta[0, i]:.5f}'				)


if __name__ == "__main__":
							main()







"""simple docstring"""





import random
import sys

__UpperCamelCase						:   Tuple							   =	'''ABCDEFGHIJKLMNOPQRSTUVWXYZ'''

def 						__SCREAMING_SNAKE_CASE						(   ):
	lowerCAmelCase__			:		List[str]						       =			input('''Enter message: '''				)
	lowerCAmelCase__			:		Optional[int]						       =			'''LFWOAYUISVKMNXPBDCRJTQEGHZ'''
	lowerCAmelCase__			:		List[Any]						       =			input('''Encrypt/Decrypt [e/d]: '''				)

	check_valid_key(A_				)

	if resp.lower().startswith('''e'''				):
		lowerCAmelCase__			:		Tuple						       =			'''encrypt'''
		lowerCAmelCase__			:		Union[str, Any]						       =			encrypt_message(A_		,  A_				)
	elif resp.lower().startswith('''d'''				):
		lowerCAmelCase__			:		Dict						       =			'''decrypt'''
		lowerCAmelCase__			:		str						       =			decrypt_message(A_		,  A_				)

	print(f'\n{mode.title()}ion: \n{translated}'				)

def 						__SCREAMING_SNAKE_CASE						(   A_				):
	lowerCAmelCase__			:		str						       =			list(A_				)
	lowerCAmelCase__			:		int						       =			list(A_				)
	key_list.sort()
	letters_list.sort()

	if key_list != letters_list:
		sys.exit('''Error in the key or symbol set.'''				)

def 						__SCREAMING_SNAKE_CASE						(   A_		,  A_				):
	return translate_message(A_		,  A_		,  '''encrypt'''				)

def 						__SCREAMING_SNAKE_CASE						(   A_		,  A_				):
	return translate_message(A_		,  A_		,  '''decrypt'''				)

def 						__SCREAMING_SNAKE_CASE						(   A_		,  A_		,  A_				):
	lowerCAmelCase__			:		str						       =			''''''
	lowerCAmelCase__			:		List[str]						       =			LETTERS
	lowerCAmelCase__			:		Optional[int]						       =			key

	if mode == "decrypt":
		lowerCAmelCase__       ,lowerCAmelCase__			:		int						       =			chars_b, chars_a

	for symbol in message:
		if symbol.upper() in chars_a:
			lowerCAmelCase__			:		int						       =			chars_a.find(symbol.upper()				)
			if symbol.isupper():
				translated += chars_b[sym_index].upper()
			else:
				translated += chars_b[sym_index].lower()
		else:
			translated += symbol

	return translated

def 						__SCREAMING_SNAKE_CASE						(   ):
	lowerCAmelCase__			:		Optional[int]						       =			list(A_				)
	random.shuffle(A_				)
	return "".join(A_				)


if __name__ == "__main__":
							main()




