code: def main(input_filename):
      fin = open(input_filename, "r", encoding="utf8")
      fout = open("__" + input_filename, "w", encoding="utf8")
  
      for line in fin.readlines():
          if len(line) > 0:
              if (
                  line[0] == "2"
                  and line[1] == "0"
                  or (line[:4] == "http")
              ):
                  pass
              else:
                  fout.write(line)
  
label_desc: Use image node_id 1 for calling a global function with example usage: main(input_filename) without return types