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+"""## Constant Value Tensors
+
+TensorFlow provides several operations that you can use to generate constants.
+
+@@zeros
+@@zeros_like
+
+@@ones
+@@ones_like
+
+@@fill
+
+@@constant
+
+## Sequences
+
+@@linspace
+
+@@range
+
+## Random Tensors
+
+TensorFlow has several ops that create random tensors with different
+distributions.  The random ops are stateful, and create new random values each
+time they are evaluated.
+
+The `seed` keyword argument in these functions acts in conjunction with
+the graph-level random seed. Changing either the graph-level seed using
+[`set_random_seed`](constant_op.md#set_random_seed) or the op-level seed
+will change the underlying seed of these operations. Setting neither graph-level
+nor op-level seed, results in a random seed for all operations.
+See [`set_random_seed`](constant_op.md#set_random_seed) for details on the
+interaction between operation-level and graph-level random seeds.
+
+### Examples:
+
+```python
+# Create a tensor of shape [2, 3] consisting of random normal values, with mean
+# -1 and standard deviation 4.
+norm = tf.random_normal([2, 3], mean=-1, stddev=4)
+
+# Shuffle the first dimension of a tensor
+c = tf.constant([[1, 2], [3, 4], [5, 6]])
+shuff = tf.random_shuffle(c)
+
+# Each time we run these ops, different results are generated
+sess = tf.Session()
+print sess.run(norm)
+print sess.run(norm)
+
+# Set an op-level seed to generate repeatable sequences across sessions.
+c = tf.constant([[1, 2], [3, 4], [5, 6]])
+sess = tf.Session()
+norm = tf.random_normal(c, seed=1234)
+print sess.run(norm)
+print sess.run(norm)
+```
+
+Another common use of random values is the intialization of variables. Also see
+the [Variables How To](../../how_tos/variables/index.md).
+
+```python
+# Use random uniform values in [0, 1) as the initializer for a variable of shape
+# [2, 3]. The default type is float32.
+var = tf.Variable(tf.random_uniform([2, 3]), name="var")
+init = tf.initialize_all_variables()
+
+sess = tf.Session()
+sess.run(init)
+print sess.run(var)
+```
+
+@@random_normal
+@@truncated_normal
+@@random_uniform
+@@random_shuffle
+@@set_random_seed
+
+"""
+"""Constant Operation.
+
+Has to be separate from array_ops to avoid a cyclic dependency.
+"""
+import tensorflow.python.platform
+import numpy as np
+
+from tensorflow.core.framework import attr_value_pb2
+from tensorflow.python.framework import ops
+from tensorflow.python.framework import tensor_shape
+from tensorflow.python.framework import tensor_util
+from tensorflow.python.framework import types
+
+
+def constant(value, dtype=None, shape=None, name="Const"):
+  """Creates a constant tensor.
+
+   The resulting tensor is populated with values of type `dtype`, as
+   specified by arguments `value` and (optionally) `shape` (see examples
+   below).
+
+   The argument `value` can be a constant value, or a list of values of type
+   `dtype`. If `value` is a list, then the length of the list must be less
+   than or equal to the number of elements implied by the `shape` argument (if
+   specified). In the case where the list length is less than the number of
+   elements specified by `shape`, the last element in the list will be used
+   to fill the remaining entries.
+
+   The argument `shape` is optional. If present, it specifies the dimensions
+   of the resulting tensor. If not present, then the tensor is a scalar (0-D)
+   if `value` is a scalar, or 1-D otherwise.
+
+   If the argument `dtype` is not specified, then the type is inferred from
+   the type of `value`.
+
+   For example:
+
+   ```python
+   # Constant 1-D Tensor populated with value list.
+   tensor = tf.constant([1, 2, 3, 4, 5, 6, 7]) => [1 2 3 4 5 6 7]
+
+   # Constant 2-D tensor populated with scalar value -1.
+   tensor = tf.constant(-1.0, shape=[2, 3]) => [[-1. -1. -1.]
+                                                [-1. -1. -1.]]
+   ```
+
+  Args:
+    value:     A constant value (or list) of output type `dtype`.
+
+    dtype:     The type of the elements of the resulting tensor.
+
+    shape:     Optional dimensions of resulting tensor.
+
+    name:      Optional name for the tensor.
+
+  Returns:
+    A Constant Tensor.
+  """
+  g = ops.get_default_graph()
+  tensor_value = attr_value_pb2.AttrValue()
+  tensor_value.tensor.CopyFrom(
+      tensor_util.make_tensor_proto(value, dtype=dtype, shape=shape))
+  dtype_value = attr_value_pb2.AttrValue(type=tensor_value.tensor.dtype)
+  const_tensor = g.create_op(
+      "Const", [], [dtype_value.type],
+      attrs={"value": tensor_value, "dtype": dtype_value}, name=name).outputs[0]
+  return const_tensor
+
+
+@ops.RegisterShape("Const")
+def _ConstantShape(op):
+  return [tensor_shape.TensorShape(
+      [d.size for d in op.get_attr("value").tensor_shape.dim])]
+
+
+ops.register_tensor_conversion_function((list, tuple), constant, 100)
+ops.register_tensor_conversion_function(np.ndarray, constant, 100)
+ops.register_tensor_conversion_function(np.generic, constant, 100)
+ops.register_tensor_conversion_function(object, constant, 200)
+
+def _tensor_shape_tensor_conversion_function(s, dtype=None, name=None):
+  if not s.is_fully_defined():
+    raise ValueError(
+        "Cannot convert a partially known TensorShape to a Tensor: %s" % s)
+  if dtype is not None:
+    if dtype not in (types.int32, types.int64):
+      raise TypeError("Cannot convert a TensorShape to dtype: %s" % dtype)
+  else:
+    dtype = types.int32
+  if name is None:
+    name = "shape_as_tensor"
+  return constant(s.as_list(), dtype=dtype, name=name)
+
+ops.register_tensor_conversion_function(
+    tensor_shape.TensorShape, _tensor_shape_tensor_conversion_function, 100)
+
+def _dimension_tensor_conversion_function(d, dtype=None, name=None):
+  if d.value is None:
+    raise ValueError("Cannot convert an unknown Dimension to a Tensor: %s" % d)
+  if dtype is not None:
+    if dtype not in (types.int32, types.int64):
+      raise TypeError("Cannot convert a TensorShape to dtype: %s" % dtype)
+  else:
+    dtype = types.int32
+  if name is None:
+    name = "shape_as_tensor"
+  return constant(d.value, dtype=dtype, name=name)
+
+ops.register_tensor_conversion_function(
+    tensor_shape.Dimension, _dimension_tensor_conversion_function, 100)