<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def standard_to_absl(level):
 """Converts an integer level from the standard value to the absl value. Args: level: int, a Python standard logging level. Raises: TypeError: Raised when level is not an integer. Returns: The corresponding integer level for use in absl logging. """

  if not isinstance(level, int):
    raise TypeError('Expect an int level, found {}'.format(type(level)))
  if level < 0:
    level = 0
  if level < STANDARD_DEBUG:
    # Maps to vlog levels.
    return STANDARD_DEBUG - level + 1
  elif level < STANDARD_INFO:
    return ABSL_DEBUG
  elif level < STANDARD_WARNING:
    return ABSL_INFO
  elif level < STANDARD_ERROR:
    return ABSL_WARNING
  elif level < STANDARD_CRITICAL:
    return ABSL_ERROR
  else:
    return ABSL_FATAL