code: def get_ip_protocol(s):
      if "tcp" in s:
          return "tcp"
      if "UDP" in s:
          return "udp"
      if "EIGRP" in s:
          return "eigrp"
      if "ICMP" in s:
          return "icmp"
      return None
  
file_path: datashader/examples/pcap_to_parquet.py
imports: from __future__ import annotations
  import re
  import socket
  import struct
  import sys
  import fastparquet
  import numpy
  import pandas
label_desc: Use image node_id 2 for calling a global function with example usage: get_ip_protocol(s) and returns: None, str, str, str, str