code: def switch(x: str):
      return {"N": 0, "A": 1, "M": 2}[x]
  
imports: import math
  from collections import namedtuple
  from typing import Tuple
  import numpy
  from numba import njit
  from numba.typed import List
  from statsmodels.tsa.seasonal import seasonal_decompose
  from .utils import _calculate_intervals, CACHE, NOGIL
label_desc: Use image node_id 13 for calling a global function with example usage: switch(x) and returns: dict