class_docstr: Context manager to set log error level
code: def __enter__(self):
      global error_level
      self._original_level = error_level
      error_level = self.level
  
file_path: nibabel/nibabel/imageglobals.py
imports: import logging
label_desc: Use image node_id 2 for calling the ErrorLevel obj's underlying member method code with example usage: obj.__enter__() without return types