tf.debugging.Assert

Asserts that the given condition is true.

View aliases

Main aliases

tf.Assert

Compat aliases for migration

See Migration guide for more details.

tf.compat.v1.Assert, tf.compat.v1.debugging.Assert

tf.debugging.Assert(
    condition, data, summarize=None, name=None
)

If condition evaluates to false, print the list of tensors in data. summarize determines how many entries of the tensors to print.

Note: In graph mode, to ensure that Assert executes, one usually attaches a dependency:

# Ensure maximum element of x is smaller or equal to 1
assert_op = tf.Assert(tf.less_equal(tf.reduce_max(x), 1.), [x])
with tf.control_dependencies([assert_op]):
  ... code using x ...

Args
condition	The condition to evaluate.
data	The tensors to print out when condition is false.
summarize	Print this many entries of each tensor.
name	A name for this operation (optional).

Returns
assert_op	An Operation that, when executed, raises a tf.errors.InvalidArgumentError if condition is not true.

Raises

Note: The output of this function should be used. If it is not, a warning will be logged or an error may be raised. To mark the output as used, call its .mark_used() method.

Eager Compatibility

tf.errors.InvalidArgumentError if condition is not true