






from __future__ import annotations




def       _SCREAMING_SNAKE_CASE (							__snake_case   ,      __snake_case   ,      __snake_case   ,      )				->						tuple:
       if (electron_conc, hole_conc, intrinsic_conc).count(0 ) != 1:
              raise ValueError("""You cannot supply more or less than 2 values""" )
       elif electron_conc < 0:
              raise ValueError("""Electron concentration cannot be negative in a semiconductor""" )
       elif hole_conc < 0:
              raise ValueError("""Hole concentration cannot be negative in a semiconductor""" )
       elif intrinsic_conc < 0:
              raise ValueError(
                  """Intrinsic concentration cannot be negative in a semiconductor""" )
       elif electron_conc == 0:
              return (
                  "electron_conc",
                  intrinsic_conc**2 / hole_conc,
              )
       elif hole_conc == 0:
              return (
                  "hole_conc",
                  intrinsic_conc**2 / electron_conc,
              )
       elif intrinsic_conc == 0:
              return (
                  "intrinsic_conc",
                  (electron_conc * hole_conc) ** 0.5,
              )
       else:
              return (-1, -1)


if __name__ == "__main__":
  import doctest

  doctest.testmod()





'''simple docstring'''


from unittest.mock import Mock, patch

from file_transfer.send_file import send_file



@patch("""socket.socket"""				)
@patch("""builtins.open"""				)
def  _SCREAMING_SNAKE_CASE     (      UpperCamelCase__    :					Dict ,    UpperCamelCase__    :					Tuple				):




     """simple docstring"""


     a_     :							Dict     						=  Mock()
     a_     :							List[str]     						=  conn, Mock()
     a_     :							Optional[int]     						=  iter([1, None]				)
     a_     :							List[str]     						=  lambda UpperCamelCase__				: next(UpperCamelCase__				)

     # ===== invoke =====
     send_file(filename="""mytext.txt""" ,    testing=UpperCamelCase__				)

     # ===== ensurance =====
     sock.assert_called_once()
     sock.return_value.bind.assert_called_once()
     sock.return_value.listen.assert_called_once()
     sock.return_value.accept.assert_called_once()
     conn.recv.assert_called_once()

     file.return_value.__enter__.assert_called_once()
     file.return_value.__enter__.return_value.read.assert_called()

     conn.send.assert_called_once()
     conn.close.assert_called_once()
     sock.return_value.shutdown.assert_called_once()
     sock.return_value.close.assert_called_once()
