class_docstr: Base Class for series
docstr: Length of the series expansion
docstr_tok: ["Length","of","the","series","expansion"]
code: def length(self):
      """Length of the series expansion"""
      raise NotImplementedError("(%s).length" % self)
  
file_path: sympy/sympy/series/series_class.py
imports: from sympy.core.expr import Expr
  from sympy.core.singleton import S
  from sympy.core.cache import cacheit
label_desc: Use image node_id 4 for calling the SeriesBase obj's underlying member method code with example usage: obj.length() without return types