code: def main(argv):
      for path in argv[1:]:
          text = tables_align_columns(path)
          sys.stdout.write(
              text.encode(
                  sys.stdout.encoding or "utf-8", "xmlcharrefreplace"
              )
          )
  
imports: import codecs
  import re
  import sys
  from collections import defaultdict
label_desc: Use image node_id 3 for calling a global function with example usage: main(argv) without return types