"""simple docstring"""
from __future__ import annotations

SCREAMING_SNAKE_CASE__   =					"Muhammad Umer Farooq"
SCREAMING_SNAKE_CASE__   =					"MIT"
SCREAMING_SNAKE_CASE__   =					"1.0.0"
SCREAMING_SNAKE_CASE__   =					"Muhammad Umer Farooq"
SCREAMING_SNAKE_CASE__   =					"contact@muhammadumerfarooq.me"
SCREAMING_SNAKE_CASE__   =					"Alpha"

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

import requests



class 					lowerCAmelCase_      (     lowerCAmelCase   ):



				"""simple docstring"""

				def __init__(			self						,      lowerCAmelCase      ):






										"""simple docstring"""

										super().__init__()
										snake_case        =     []
										snake_case        =     domain

				def 						snake_case	(			self						,      lowerCAmelCase						,      lowerCAmelCase      ):






										"""simple docstring"""

										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:
																																		snake_case        =     parse.urljoin(self.domain						,      lowerCAmelCase      )
																																		self.urls.append(lowerCAmelCase      )





def 				lowerCAmelCase__      (     _UpperCamelCase    :			str   )   ->			str:





						"""simple docstring"""






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





def 				lowerCAmelCase__      (     _UpperCamelCase    :			str   )   ->			str:





						"""simple docstring"""






						return parse.urlparse(_UpperCamelCase   ).netloc





def 				lowerCAmelCase__      (     _UpperCamelCase    :			str = "https://github.com"   )   ->			list[str]:





						"""simple docstring"""






						snake_case        =     get_domain_name(_UpperCamelCase   )

						# Initialize the parser
						snake_case        =     Parser(_UpperCamelCase   )

						try:
												# Open URL
												snake_case        =     requests.get(_UpperCamelCase   )

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

												# Get links and loop through
												snake_case        =     set()
												for link in parser.urls:
																		# open URL.
																		# read = requests.get(link)
																		try:
																								snake_case        =     requests.get(_UpperCamelCase   )
																								# Get the valid email.
																								snake_case        =     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__":
					SCREAMING_SNAKE_CASE__   =					emails_from_url("https://github.com")
					print(f"""{len(emails)} emails found:""")
					print("\n".join(sorted(emails)))



"""simple docstring"""
from __future__ import annotations

from typing import Any



class 					lowerCAmelCase_      (     lowerCAmelCase   ):



				"""simple docstring"""
				pass





class 					lowerCAmelCase_      :



				"""simple docstring"""

				def __init__(			self						,      lowerCAmelCase      ):






										"""simple docstring"""

										snake_case        =     data
										snake_case        =     None

				def __iter__(			self      ):






										"""simple docstring"""

										snake_case        =     self
										snake_case        =     []
										while node:
																if node in visited:
																						raise ContainsLoopError
																visited.append(lowerCAmelCase      )
																yield node.data
																snake_case        =     node.next_node

				@property
				def 						snake_case	(			self      ):






										"""simple docstring"""

										try:
																list(self      )
																return False
										except ContainsLoopError:
																return True


if __name__ == "__main__":
					SCREAMING_SNAKE_CASE__   =					Node(1)
					SCREAMING_SNAKE_CASE__   =					Node(2)
					SCREAMING_SNAKE_CASE__   =					Node(3)
					SCREAMING_SNAKE_CASE__   =					Node(4)
					print(root_node.has_loop)  # False
					SCREAMING_SNAKE_CASE__   =					root_node.next_node
					print(root_node.has_loop)  # True

					SCREAMING_SNAKE_CASE__   =					Node(5)
					SCREAMING_SNAKE_CASE__   =					Node(6)
					SCREAMING_SNAKE_CASE__   =					Node(5)
					SCREAMING_SNAKE_CASE__   =					Node(6)
					print(root_node.has_loop)  # False

					SCREAMING_SNAKE_CASE__   =					Node(1)
					print(root_node.has_loop)  # False


