Function getPythonVariables

frontend/src/lib/python/executor.ts:181–232

()

 * Get available variables in the Python namespace
 */
export async function getPythonVariables(): Promise<Record<string, any>> {
  const pyodide = getPyodide();
  if (!pyodide) {
    return {};
  }

  try {
    const variables = await pyodide.runPython(`
      import json
      import pandas as pd
      import numpy as np
      
      vars_info = {}
      # Create a snapshot to avoid "dictionary changed size during iteration" error
      globals_snapshot = dict(globals())
      for name, obj in globals_snapshot.items():
          if not name.startswith('_') and not callable(obj):
              try:
                  if isinstance(obj, pd.DataFrame):
                      vars_info[name] = {
                          'type': 'DataFrame',
                          'shape': obj.shape,
                          'columns': obj.columns.tolist()
                      }
                  elif isinstance(obj, np.ndarray):
                      vars_info[name] = {
                          'type': 'ndarray',
                          'shape': obj.shape,
                          'dtype': str(obj.dtype)
                      }
                  elif isinstance(obj, (list, tuple, dict)):
                      vars_info[name] = {
                          'type': type(obj).__name__,
                          'length': len(obj) if hasattr(obj, '__len__') else None
                      }
                  else:
                      vars_info[name] = {
                          'type': type(obj).__name__,
                          'value': str(obj)[:100]  # Truncate long values
                      }
              except:
                  pass  # Skip problematic objects
      
      json.dumps(vars_info)
    `);

    return JSON.parse(variables);
  } catch (error) {
    console.error('[Python] Failed to get variables:', error);
    return {};
  }
}

/**
 * Clear Python namespace (keep imports)