text: #!/usr/bin/env python3
  
  import argparse
  
  
  def dumb_round(num, repeats=6):
      s = str(num)
      if "." not in s:
          return s
      if s.endswith(".0"):
          return s[:-2]
      zeros = "0" * repeats
      nines = "9" * repeats
      if zeros in s:
          return s.split(zeros, 1)[0].rstrip(".")
      if nines in s:
          # How many digits before the nines is how many we want to round to.
          places = len(s.split(nines, 1)[0].split(".")[1]) or None
          return str(round(num, places))
      return s
  
  
  # How's this for continuous integration.
  assert dumb_round(10.00000007) == "10"
  assert dumb_round(4.500000022) == "4.5"
  assert dumb_round(0.999999987) == "1"
  assert dumb_round(0.049999999) == "0.05"
  
  
  if __name__ == "__main__":
      parser = argparse.ArgumentParser()
      parser.add_argument('num', type=float)
  
      args = parser.parse_args()
      print(dumb_round(args.num))
  