

from __future__ import annotations

lowerCamelCase      				=     '''Muhammad Umer Farooq'''
lowerCamelCase      				=     '''MIT'''
lowerCamelCase      				=     '''1.0.0'''
lowerCamelCase      				=     '''Muhammad Umer Farooq'''
lowerCamelCase      				=     '''contact@muhammadumerfarooq.me'''
lowerCamelCase      				=     '''Alpha'''

import re
from html.parser import HTMLParser
from urllib import parse

import requests





class     snake_case_			(				_a							):


							"""simple docstring"""





							def __init__( self					,						_A							):
												super().__init__()
												__lowerCAmelCase					=							[]
												__lowerCAmelCase					=							domain




							def        A__  ( self					,						_A					,						_A							):
												# Only parse the 'anchor' tag.
												if tag == "a":
																	# Check the list of defined attributes.
																	for name, value in attrs:
																						# If href is defined, and not empty nor # print it.
																						if name == "href" and value != "#" and value != "":
																											# If not already in urls.
																											if value not in self.urls:
																																__lowerCAmelCase					=							parse.urljoin(self.domain					,						_A							)
																																self.urls.append(_A							)


def        __lowercase    (  UpperCAmelCase__      ):

					"""simple docstring"""






					return ".".join(get_sub_domain_name(UpperCAmelCase__      ).split('.'      )[-2:]      )


def        __lowercase    (  UpperCAmelCase__      ):

					"""simple docstring"""






					return parse.urlparse(UpperCAmelCase__      ).netloc


def        __lowercase    (  UpperCAmelCase__ = "https://github.com"      ):

					"""simple docstring"""






					__lowerCAmelCase					=							get_domain_name(UpperCAmelCase__      )

					# Initialize the parser
					__lowerCAmelCase					=							Parser(UpperCAmelCase__      )

					try:
										# Open URL
										__lowerCAmelCase					=							requests.get(UpperCAmelCase__      )

										# pass the raw HTML to the parser to get links
										parser.feed(r.text      )

										# Get links and loop through
										__lowerCAmelCase					=							set()
										for link in parser.urls:
															# open URL.
															# read = requests.get(link)
															try:
																				__lowerCAmelCase					=							requests.get(UpperCAmelCase__      )
																				# Get the valid email.
																				__lowerCAmelCase					=							re.findall('[a-zA-Z0-9]+@' + domain		,					read.text      )
																				# If not in list then append it.
																				for email in emails:
																									valid_emails.add(UpperCAmelCase__      )
															except ValueError:
																				pass
					except ValueError:
										raise SystemExit(1      )

					# Finally return a sorted list of email addresses with no duplicates.
					return sorted(UpperCAmelCase__      )


if __name__ == "__main__":
		lowerCamelCase      				=     emails_from_url('''https://github.com''')
		print(F'''{len(emails)} emails found:''')
		print('''\n'''.join(sorted(emails)))









from __future__ import annotations

from collections.abc import MutableSequence





class     snake_case_			:


							"""simple docstring"""





							def __init__( self					,						_A					,						_A							):
												if len(_A							) != degree + 1:
																	raise ValueError(
																	    'The number of coefficients should be equal to the degree + 1.'							)

												__lowerCAmelCase					=							list(_A							)
												__lowerCAmelCase					=							degree




							def __add__( self					,						_A							):

												if self.degree > polynomial_a.degree:
																	__lowerCAmelCase					=							self.coefficients[:]
																	for i in range(polynomial_a.degree + 1							):
																						coefficients[i] += polynomial_a.coefficients[i]
																	return Polynomial(self.degree					,						_A							)
												else:
																	__lowerCAmelCase					=							polynomial_a.coefficients[:]
																	for i in range(self.degree + 1							):
																						coefficients[i] += self.coefficients[i]
																	return Polynomial(polynomial_a.degree					,						_A							)




							def __sub__( self					,						_A							):
												return self + polynomial_a * Polynomial(0					,						[-1]							)




							def __neg__( self							):
												return Polynomial(self.degree					,						[-c for c in self.coefficients]							)




							def __mul__( self					,						_A							):
												__lowerCAmelCase					=							[0] * (self.degree + polynomial_a.degree + 1)
												for i in range(self.degree + 1							):
																	for j in range(polynomial_a.degree + 1							):
																						coefficients[i + j] += (
																						    self.coefficients[i] * polynomial_a.coefficients[j]
																						)

												return Polynomial(self.degree + polynomial_a.degree					,						_A							)




							def        A__  ( self					,						_A							):
												__lowerCAmelCase					=							0
												for i in range(self.degree + 1							):
																	result += self.coefficients[i] * (substitution**i)
												return result




							def __str__( self							):
												__lowerCAmelCase					=							''
												for i in range(self.degree					,						-1					,						-1							):
																	if self.coefficients[i] == 0:
																						continue
																	elif self.coefficients[i] > 0:
																						if polynomial:
																											polynomial += " + "
																	else:
																						polynomial += " - "

																	if i == 0:
																						polynomial += str(abs(self.coefficients[i]							)							)
																	elif i == 1:
																						polynomial += str(abs(self.coefficients[i]							)							) + "x"
																	else:
																						polynomial += str(abs(self.coefficients[i]							)							) + "x^" + str(_A							)

												return polynomial




							def __repr__( self							):
												return self.__str__()




							def        A__  ( self							):
												__lowerCAmelCase					=							[0] * self.degree
												for i in range(self.degree							):
																	__lowerCAmelCase					=							self.coefficients[i + 1] * (i + 1)
												return Polynomial(self.degree - 1					,						_A							)




							def        A__  ( self					,						_A = 0							):
												__lowerCAmelCase					=							[0] * (self.degree + 2)
												__lowerCAmelCase					=							constant
												for i in range(self.degree + 1							):
																	__lowerCAmelCase					=							self.coefficients[i] / (i + 1)
												return Polynomial(self.degree + 1					,						_A							)




							def __eq__( self					,						_A							):
												if not isinstance(_A					,						_A							):
																	return False

												if self.degree != polynomial_a.degree:
																	return False

												for i in range(self.degree + 1							):
																	if self.coefficients[i] != polynomial_a.coefficients[i]:
																						return False

												return True




							def __ne__( self					,						_A							):
												return not self.__eq__(_A							)






