code: def testTensorCountMustMatchPlaceholderCount(self):
      with self.cached_session():
          with self.assertRaisesRegex(
              ValueError,
              r"The template expects 2 tensors, but the inputs only has"
              r" 1\.\s.*",
          ):
              tensor = math_ops.range(10)
              format_output = string_ops.string_format("{} {}", tensor)
              self.evaluate(format_output)
      with self.cached_session():
          with self.assertRaisesRegex(
              ValueError,
              r"The template expects 2 tensors, but the inputs only has"
              r" 1\.\s.*",
          ):
              tensor = math_ops.range(10)
              format_output = string_ops.string_format(
                  "{} {}", [tensor]
              )
              self.evaluate(format_output)
      with self.cached_session():
          with self.assertRaisesRegex(
              ValueError,
              r"The template expects 1 tensors, but the inputs only has"
              r" 2\.\s.*",
          ):
              tensor = math_ops.range(10)
              format_output = string_ops.string_format(
                  "{}", (tensor, tensor)
              )
              self.evaluate(format_output)
  
imports: from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import string_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
  from tensorflow.python.util import compat
label_desc: Use image node_id 21 for calling the StringFormatOpTest obj's underlying member method code with example usage: obj.testTensorCountMustMatchPlaceholderCount() without return types