class_docstr: HTTP status codes and reason phrases
  
  Status codes from the following RFCs are all observed:
  
      * RFC 7231: Hypertext Transfer Protocol (HTTP/1.1), obsoletes 2616
      * RFC 6585: Additional HTTP Status Codes
      * RFC 3229: Delta encoding in HTTP
      * RFC 4918: HTTP Extensions for WebDAV, obsoletes 2518
      * RFC 5842: Binding Extensions to WebDAV
      * RFC 7238: Permanent Redirect
      * RFC 2295: Transparent Content Negotiation in HTTP
      * RFC 2774: An HTTP Extension Framework
      * RFC 7725: An HTTP Status Code to Report Legal Obstacles
      * RFC 7540: Hypertext Transfer Protocol Version 2 (HTTP/2)
      * RFC 2324: Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0)
      * RFC 8297: An HTTP Status Code for Indicating Hints
      * RFC 8470: Using Early Data in HTTP
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code: def is_server_error(self):
      return 500 <= self <= 599
  
file_path: cpython/Lib/http/__init__.py
imports: from enum import StrEnum, IntEnum, _simple_enum
label_desc: Use image node_id 6 for calling the HTTPStatus obj's underlying member method code with example usage: obj.is_server_error() and returns: unknown