code: def ordinal_str(n):
      """Converts a number to and ordinal string."""
      return str(n) + {1: "st", 2: "nd", 3: "rd"}.get(
          4 if 10 <= n % 100 < 20 else n % 10, "th"
      )
  
imports: import copy
  import os
  import re
  import sys
  from contextlib import contextmanager
  import numpy
  import pandas
  import scipy.special
  import sklearn
label_desc: Use image node_id 11 for calling a global function with example usage: ordinal_str(n) and returns: unknown