code: def sequenceOfFloatsLt(string):
      """
      A custom type for the argparse commandline parser.
      Accepts only colon-separated lists of valid float values that are less than 0.
  
      Examples
      --------
  
      >>> parser.add_argument('argname', type=sequenceOfFloatsLt, help='help')
  
      """
      value = sequenceOfFloats(string)
      return __sequenceLt(value)
  
imports: import argparse
  import itertools
  import os
label_desc: Use image node_id 12 for calling a global function with example usage: sequenceOfFloatsLt(string) and returns: __sequenceLt