from __future__ import annotations

__lowerCamelCase    :				Union[str, Any]							     =	'''Muhammad Umer Farooq'''
__lowerCamelCase    :				str							     =	'''MIT'''
__lowerCamelCase    :				str							     =	'''1.0.0'''
__lowerCamelCase    :				List[Any]							     =	'''Muhammad Umer Farooq'''
__lowerCamelCase    :				str							     =	'''contact@muhammadumerfarooq.me'''
__lowerCamelCase    :				List[str]							     =	'''Alpha'''

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

import requests







class __snake_case       (		__a	):




   def __init__(					self    :       int ,			_lowercase    :       str   ):



     """simple docstring"""






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




   def 			__a		(					self    :       List[Any] ,			_lowercase    :       int ,			_lowercase    :       Optional[int]   ):



     """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:
             SCREAMING_SNAKE_CASE__    							=   parse.urljoin(self.domain ,			A__   )
             self.urls.append(A__   )





def 			__SCREAMING_SNAKE_CASE						(      __UpperCamelCase					: str			)							->      str:







  """simple docstring"""





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



def 			__SCREAMING_SNAKE_CASE						(      __UpperCamelCase					: str			)							->      str:







  """simple docstring"""





  return parse.urlparse(__UpperCamelCase			).netloc



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







  """simple docstring"""





  SCREAMING_SNAKE_CASE__    							=   get_domain_name(__UpperCamelCase			)

  # Initialize the parser
  SCREAMING_SNAKE_CASE__    							=   Parser(__UpperCamelCase			)

  try:
    # Open URL
    SCREAMING_SNAKE_CASE__    							=   requests.get(__UpperCamelCase			)

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

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

from math import log

from scipy.constants import Boltzmann, physical_constants

__lowerCamelCase    :				int							     =	300  # TEMPERATURE (unit = K)



def 			__SCREAMING_SNAKE_CASE						(      __UpperCamelCase					: float				,  __UpperCamelCase					: float				,  __UpperCamelCase					: float				,  )							->      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()
