code: def evaluate_condition(condition, vars):
      '''evaluation a conditional (boolean) statement'''
      if condition is None:
          return True
      v = evaluate_expression(condition, vars)
      if v is None:
          return False
      return f evaluate_condition(condition, vars):
      '''evaluation a conditional (boolean) statement'''
      if condition is None:
          return True
      v = evaluate_expression(condition, vars)
      if v is None:
          return False
      return v
docs: evaluation a conditional (boolean) statement