[tfdbg] Fix examples_test for TF2

RELNOTES: N/A
PiperOrigin-RevId: 264270116

tensorflow/python/debug/examples/debug_errors.py

@@ -22,10 +22,12 @@ import sys
 import tempfile
 
 import numpy as np
-import tensorflow as tf
+import tensorflow
 
 from tensorflow.python import debug as tf_debug
 
+tf = tensorflow.compat.v1
+
 
 def main(_):
   sess = tf.Session()

tensorflow/python/debug/examples/debug_fibonacci.py

@@ -22,10 +22,12 @@ import sys
 
 import numpy as np
 from six.moves import xrange  # pylint: disable=redefined-builtin
-import tensorflow as tf
+import tensorflow
 
 from tensorflow.python import debug as tf_debug
 
+tf = tensorflow.compat.v1
+
 FLAGS = None
 
 

tensorflow/python/debug/examples/debug_keras.py

@@ -23,10 +23,12 @@ import sys
 import tempfile
 
 import numpy as np
-import tensorflow as tf
+import tensorflow
 
 from tensorflow.python import debug as tf_debug
 
+tf = tensorflow.compat.v1
+
 
 def main(_):
   # Create a dummy dataset.

tensorflow/python/debug/examples/debug_mnist.py

@@ -28,11 +28,13 @@ import argparse
 import sys
 import tempfile
 
-import tensorflow as tf
+import tensorflow
 
 from tensorflow.examples.tutorials.mnist import input_data
 from tensorflow.python import debug as tf_debug
 
+tf = tensorflow.compat.v1
+
 
 IMAGE_SIZE = 28
 HIDDEN_SIZE = 500

tensorflow/python/debug/examples/debug_tflearn_iris.py

@@ -21,10 +21,11 @@ import argparse
 import sys
 import tempfile
 
-import tensorflow as tf
+import tensorflow
 
 from tensorflow.python import debug as tf_debug
 
+tf = tensorflow.compat.v1
 
 _IRIS_INPUT_DIM = 4