code: def normalize_text(s):
      return "\n".join(map(str.strip, s.strip().split("\n")))
  
imports: import os
  from contextlib import contextmanager
  import pandas
  import numpy
  from pyspark import pandas
  from pyspark.testing.pandasutils import PandasOnSparkTestCase, TestUtils
label_desc: Use image node_id 1 for calling a global function with example usage: normalize_text(s) and returns: str