input: from typing import List
  
  def match_numeric_strings(strings: List[str]) -> List[bool]:
      """ Match all numeric strings in a given list using a regular expression.
      >>> match_numeric_strings(['123456789', 'abc123', '98765', ''])
      [True, False, True, False]
      >>> match_numeric_strings(['123', '456', '789'])
      [True, True, True]
      """
      pattern = '^[0-9]+$'
      return [bool(re.match(pattern, s)) for s in strings]
output:     import re