code: def show_first_example_in_df(df):
      message = ""
      for column in df.columns:
          # prints \n instead of an a newline
          column_value = df[column][0].replace("\n", "\\n")
          message += f"-->Column {column}:\n{column_value}\n"
      return message
  
imports: import argparse
  import math
  import os
  import pathlib
  from collections import Counter
  import numpy
  import pandas
label_desc: Use image node_id 19 for calling a global function with example usage: show_first_example_in_df(df) and returns: message