diff --git a/configure.py b/configure.py
index a003265..945c303 100644
--- a/configure.py
+++ b/configure.py
@@ -144,7 +144,7 @@
 
 
 def write_action_env_to_bazelrc(var_name, var):
-  write_to_bazelrc('build --action_env %s="%s"' % (var_name, str(var)))
+  write_to_bazelrc('build --action_env {}="{}"'.format(var_name, str(var)))
 
 
 def run_shell(cmd, allow_non_zero=False, stderr=None):
@@ -205,7 +205,7 @@
   # Get PYTHON_BIN_PATH, default is the current running python.
   default_python_bin_path = sys.executable
   ask_python_bin_path = ('Please specify the location of python. [Default is '
-                         '%s]: ') % default_python_bin_path
+                         '{}]: ').format(default_python_bin_path)
   while True:
     python_bin_path = get_from_env_or_user_or_default(environ_cp,
                                                       'PYTHON_BIN_PATH',
@@ -215,9 +215,10 @@
     if os.path.isfile(python_bin_path) and os.access(python_bin_path, os.X_OK):
       break
     elif not os.path.exists(python_bin_path):
-      print('Invalid python path: %s cannot be found.' % python_bin_path)
+      print('Invalid python path: {} cannot be found.'.format(python_bin_path))
     else:
-      print('%s is not executable.  Is it the python binary?' % python_bin_path)
+      print('{} is not executable.  Is it the python binary?'.format(
+          python_bin_path))
     environ_cp['PYTHON_BIN_PATH'] = ''
 
   # Convert python path to Windows style before checking lib and version
@@ -236,7 +237,7 @@
       default_python_lib_path = python_lib_paths[0]
       python_lib_path = get_input(
           'Please input the desired Python library path to use.  '
-          'Default is [%s]\n' % python_lib_paths[0])
+          'Default is [{}]\n'.format(python_lib_paths[0]))
       if not python_lib_path:
         python_lib_path = default_python_lib_path
     environ_cp['PYTHON_LIB_PATH'] = python_lib_path
@@ -252,7 +253,7 @@
   # Set-up env variables used by python_configure.bzl
   write_action_env_to_bazelrc('PYTHON_BIN_PATH', python_bin_path)
   write_action_env_to_bazelrc('PYTHON_LIB_PATH', python_lib_path)
-  write_to_bazelrc('build --python_path=\"%s"' % python_bin_path)
+  write_to_bazelrc('build --python_path=\"{}"'.format(python_bin_path))
   environ_cp['PYTHON_BIN_PATH'] = python_bin_path
 
   # If choosen python_lib_path is from a path specified in the PYTHONPATH
@@ -266,7 +267,7 @@
   with open(
       os.path.join(_TF_WORKSPACE_ROOT, 'tools', 'python_bin_path.sh'),
       'w') as f:
-    f.write('export PYTHON_BIN_PATH="%s"' % python_bin_path)
+    f.write('export PYTHON_BIN_PATH="{}"'.format(python_bin_path))
 
 
 def reset_tf_configure_bazelrc():
@@ -320,11 +321,12 @@
       Raise the error to avoid infinitely looping.
   """
   if not question:
-    question = 'Do you wish to build TensorFlow with %s support?' % query_item
+    question = 'Do you wish to build TensorFlow with {} support?'.format(
+        query_item)
   if not yes_reply:
-    yes_reply = '%s support will be enabled for TensorFlow.' % query_item
+    yes_reply = '{} support will be enabled for TensorFlow.'.format(query_item)
   if not no_reply:
-    no_reply = 'No %s' % yes_reply
+    no_reply = 'No {}'.format(yes_reply)
 
   yes_reply += '\n'
   no_reply += '\n'
@@ -368,7 +370,7 @@
         print(no_reply)
         var = False
     else:
-      print('Invalid selection: %s' % user_input_origin)
+      print('Invalid selection: {}'.format(user_input_origin))
   return var