code: def remove_non_digits(string):
      return "".join(
          char for char in string if char.isdigit() or char == "."
      )
  
file_path: vowpal_wabbit/python/tests/e2e_v2/assert_job.py
imports: import numpy
  import os
  from numpy.testing import assert_allclose, assert_almost_equal
  from vw_executor.vw import ExecutionStatus
  import vowpalwabbit
  from test_helper import get_function_object, datagen_driver
label_desc: Use image node_id 1 for calling a global function with example usage: remove_non_digits(string) and returns: str