SyntaxWarning: invalid escape sequence in pyjsonpath:248

[jmigual]

I get this error on pyjsonpath:248 :

SyntaxWarning: invalid escape sequence '\.'
  expr = f"(@((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+({pattern_filter_type})?((true|false|null|\d+\.?\d*|\/.*?/i|'.*?'|\[.*?\]|$((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+))?)|((true|false|null|\d+\.?\d*|\/.*?/i|'.*?'|\[.*?\]|$((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+)({pattern_filter_type})@((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\])))"
SyntaxWarning: invalid escape sequence '\d'
  expr = f"(@((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+({pattern_filter_type})?((true|false|null|\d+\.?\d*|\/.*?/i|'.*?'|\[.*?\]|$((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+))?)|((true|false|null|\d+\.?\d*|\/.*?/i|'.*?'|\[.*?\]|$((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+)({pattern_filter_type})@((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\])))"
SyntaxWarning: invalid escape sequence '\.'
  expr = f"(@((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+({pattern_filter_type})?((true|false|null|\d+\.?\d*|\/.*?/i|'.*?'|\[.*?\]|$((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+))?)|((true|false|null|\d+\.?\d*|\/.*?/i|'.*?'|\[.*?\]|$((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\]))+)({pattern_filter_type})@((\.[_0-9a-zA-Z\u4e00-\u9fa5]+)|(\[(\"|').+?(\"|')\])))"