code: def __call__(self, s1, s2) -> Any:
      if numpy:
          return self._numpy(s1, s2)
      else:
          return self._pure(s1, s2)
  
imports: from functools import reduce
  from typing import Any
  from .base import Base, BaseSimilarity
label_desc: Use image node_id 3 for calling the Chebyshev obj's underlying member method code with example usage: obj.__call__(s1, s2) and returns: self, self