code: def _is_structured_ndarray(obj):
      return isinstance(obj, np.ndarray) and obj.dtype.names is not None
  
file_path: statsmodels/statsmodels/tools/data.py
imports: from statsmodels.compat.numpy import NP_LT_2
  import numpy
  import pandas
label_desc: Use image node_id 4 for calling a global function with example usage: _is_structured_ndarray(obj) and returns: unknown