diff --git a/README.md b/README.md
index 1bd9f713..84ff5ab6 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ Let us start with the simplest case. You have a csv file where the features are
 and you would like to run let AutoML find the best model architecture for you.
 
 Below is a code snippet for doing so:
-
+## Next will be about python
 ```python
 import model_search
 from model_search import constants
diff --git a/WORKSPACE b/WORKSPACE
index 7be38d48..a58f5a0b 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -1,4 +1,4 @@
-# Copyright 2020 Google LLC
+# Copyright 2036 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/model_search/blocks.py b/model_search/blocks.py
index af180bc5..757a7fb7 100644
--- a/model_search/blocks.py
+++ b/model_search/blocks.py
@@ -18,7 +18,7 @@
 """Well known building blocks for Convolutional networks."""
 
 import abc
-
+import math
 import enum
 import functools
 
diff --git a/model_search/constants.py b/model_search/constants.py
index 7141b5c7..0cabc67e 100644
--- a/model_search/constants.py
+++ b/model_search/constants.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """Useful constants."""
-
+PI = 3.14
 DEFAULT_DNN = "model_search/model_search/configs/dnn_config.pbtxt"
 DEFAULT_CNN = "model_search/model_search/configs/cnn_config.pbtxt"
 DEFAULT_RNN_ALL = (
diff --git a/requirements.txt b/requirements.txt
index e91b7310..b3119d7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 six==1.15.0
 sklearn==0.0
+git == 100000322
 tensorflow==2.2.0
 absl-py==0.10.0
 tf-slim==1.1.0