old_contents: import enum
  import os
  import sys
  from typing import Union
  
  
  __all__ = ("Default", "SMTPStatus", "SocketPathType", "_default")
  
  
  if sys.version_info >= (3, 7):
      SocketPathType = Union[str, bytes, os.PathLike]
  else:
      SocketPathType = Union[str, bytes]
  
  
  class Default(enum.Enum):
      """
      Used for type hinting kwarg defaults.
      """
  
      token = 0
  
  
  _default = Default.token
  
  
  @enum.unique
  class SMTPStatus(enum.IntEnum):
      """
      Defines SMTP statuses for code readability.
  
      See also: http://www.greenend.org.uk/rjk/tech/smtpreplies.html
      """
  
      invalid_response = -1
      system_status_ok = 211
      help_message = 214
      ready = 220
      closing = 221
      auth_successful = 235
      completed = 250
      will_forward = 251
      cannot_vrfy = 252
      auth_continue = 334
      start_input = 354
      domain_unavailable = 421
      mailbox_unavailable = 450
      error_processing = 451
      insufficient_storage = 452
      tls_not_available = 454
      unrecognized_command = 500
      unrecognized_parameters = 501
      command_not_implemented = 502
      bad_command_sequence = 503
      parameter_not_implemented = 504
      domain_does_not_accept_mail = 521
      access_denied = 530  # Sendmail specific
      auth_failed = 535
      mailbox_does_not_exist = 550
      user_not_local = 551
      storage_exceeded = 552
      mailbox_name_invalid = 553
      transaction_failed = 554
      syntax_error = 555
  
new_contents: import enum
  import os
  from typing import Union
  
  
  __all__ = ("Default", "SMTPStatus", "SocketPathType", "_default")
  
  
  SocketPathType = Union[str, bytes, os.PathLike]
  
  
  class Default(enum.Enum):
      """
      Used for type hinting kwarg defaults.
      """
  
      token = 0
  
  
  _default = Default.token
  
  
  @enum.unique
  class SMTPStatus(enum.IntEnum):
      """
      Defines SMTP statuses for code readability.
  
      See also: http://www.greenend.org.uk/rjk/tech/smtpreplies.html
      """
  
      invalid_response = -1
      system_status_ok = 211
      help_message = 214
      ready = 220
      closing = 221
      auth_successful = 235
      completed = 250
      will_forward = 251
      cannot_vrfy = 252
      auth_continue = 334
      start_input = 354
      domain_unavailable = 421
      mailbox_unavailable = 450
      error_processing = 451
      insufficient_storage = 452
      tls_not_available = 454
      unrecognized_command = 500
      unrecognized_parameters = 501
      command_not_implemented = 502
      bad_command_sequence = 503
      parameter_not_implemented = 504
      domain_does_not_accept_mail = 521
      access_denied = 530  # Sendmail specific
      auth_failed = 535
      mailbox_does_not_exist = 550
      user_not_local = 551
      storage_exceeded = 552
      mailbox_name_invalid = 553
      transaction_failed = 554
      syntax_error = 555
  
subject: remove py3.7 check