code: def _parse_percent(val):
      if val.endswith(" %"):
          return float(val[0:-2]) / 100
      if "N/A" in val:
          return None
      assert False, repr(val)
  
imports: import csv
  import io
  import subprocess
  import sys
  from guild import util
  from guild.plugins.summary_util import SummaryPlugin
label_desc: Use image node_id 6 for calling a global function with example usage: _parse_percent(val) and returns: unknown, None