{
  "context": "This evaluation criteria assesses how well the engineer uses IPython's magic command system to implement custom line, cell, and dual-mode magic commands. The focus is on proper usage of IPython's magic decorators, registration system, and argument parsing capabilities.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Line Magic Decorator",
      "description": "Uses @line_magic decorator or @magics_class with Magics base class to register the line magic command %transform",
      "max_score": 15
    },
    {
      "name": "Cell Magic Decorator",
      "description": "Uses @cell_magic decorator or @magics_class with Magics base class to register the cell magic command %%transform_block",
      "max_score": 15
    },
    {
      "name": "Dual-mode Magic",
      "description": "Uses @line_cell_magic decorator to implement %stats that functions correctly in both line and cell magic modes",
      "max_score": 20
    },
    {
      "name": "Extension Registration",
      "description": "Implements load_ipython_extension() function to properly register magic commands with IPython's magic system using register_magic_function() or ip.register_magics()",
      "max_score": 15
    },
    {
      "name": "Argument Parsing",
      "description": "Implements proper argument parsing for magic commands, handling transformation types and text input correctly, potentially using magic_arguments decorators (@magic_arguments, @argument, parse_argstring)",
      "max_score": 15
    },
    {
      "name": "Line Transformation Logic",
      "description": "Correctly implements all four transformation types (upper, lower, reverse, title) in the line magic command and returns the transformed text",
      "max_score": 8
    },
    {
      "name": "Cell Transformation Logic",
      "description": "Correctly processes multi-line cell content in %%transform_block, applying transformation to each line and displaying output",
      "max_score": 7
    },
    {
      "name": "Statistics Calculation",
      "description": "Correctly calculates word count and character count in line mode, and word count, character count, and line count in cell mode for the %stats magic",
      "max_score": 5
    }
  ]
}