code: def str(self):
      if self._ivy_dtype.is_bool_dtype:
          return "|b1"
      elif self._ivy_dtype.is_uint_dtype:
          if self._ivy_dtype[4::] == "8":
              return "|u1"
          return "<u" + str(self.alignment)
      elif self._ivy_dtype.is_int_dtype:
          if self._ivy_dtype[3::] == "8":
              return "|i1"
          return "<i" + str(self.alignment)
      elif self._ivy_dtype.is_float_dtype:
          return "<f" + str(self.alignment)
  
imports: import ivy
  import ivy.functional.frontends.numpy
label_desc: Use image node_id 16 for calling the dtype obj's underlying member method code with example usage: obj.str() and returns: str, unknown, str, unknown, str, unknown