diff --git a/deepchem/__init__.py b/deepchem/__init__.py
index 96186b21a2..04402ba3b1 100644
--- a/deepchem/__init__.py
+++ b/deepchem/__init__.py
@@ -1,9 +1,6 @@
 """
 Imports all submodules
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __version__ = '2.3.0'
 
 import deepchem.data
diff --git a/deepchem/data/__init__.py b/deepchem/data/__init__.py
index 0e1f885b37..d5213ac559 100644
--- a/deepchem/data/__init__.py
+++ b/deepchem/data/__init__.py
@@ -1,10 +1,6 @@
 """
 Gathers all datasets in one place for convenient imports
 """
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 # TODO(rbharath): Get rid of * import
 from deepchem.data.datasets import pad_features
 from deepchem.data.datasets import pad_batch
diff --git a/deepchem/data/data_loader.py b/deepchem/data/data_loader.py
index 65f67f367d..336b20751b 100644
--- a/deepchem/data/data_loader.py
+++ b/deepchem/data/data_loader.py
@@ -1,8 +1,6 @@
 """
 Process an input dataset into a format suitable for machine learning.
 """
-from __future__ import division
-from __future__ import unicode_literals
 import os
 import gzip
 import pandas as pd
diff --git a/deepchem/data/datasets.py b/deepchem/data/datasets.py
index 57b39476b0..0cc84023f0 100644
--- a/deepchem/data/datasets.py
+++ b/deepchem/data/datasets.py
@@ -1,8 +1,6 @@
 """
 Contains wrapper class for datasets.
 """
-from __future__ import division
-from __future__ import unicode_literals
 import json
 import os
 import math
diff --git a/deepchem/data/supports.py b/deepchem/data/supports.py
index a274857c2a..74a696cec9 100644
--- a/deepchem/data/supports.py
+++ b/deepchem/data/supports.py
@@ -1,9 +1,6 @@
 """
 Sample supports from datasets.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import logging
 import time
 import numpy as np
diff --git a/deepchem/data/tests/__init__.py b/deepchem/data/tests/__init__.py
index 4d7c92cf1f..dbc2309d6d 100644
--- a/deepchem/data/tests/__init__.py
+++ b/deepchem/data/tests/__init__.py
@@ -1,10 +1,6 @@
 """
 General API for testing dataset objects
 """
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_data_loader.py b/deepchem/data/tests/test_data_loader.py
index 47eb63a7f5..3fd7ac7fdb 100644
--- a/deepchem/data/tests/test_data_loader.py
+++ b/deepchem/data/tests/test_data_loader.py
@@ -1,9 +1,6 @@
 """
 Tests for FeaturizedSamples class
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_datasets.py b/deepchem/data/tests/test_datasets.py
index a0d6b35871..ca052465c5 100644
--- a/deepchem/data/tests/test_datasets.py
+++ b/deepchem/data/tests/test_datasets.py
@@ -1,9 +1,6 @@
 """
 Tests for dataset creation
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_fasta_loader.py b/deepchem/data/tests/test_fasta_loader.py
index b44a7183d1..6e4225dbe9 100644
--- a/deepchem/data/tests/test_fasta_loader.py
+++ b/deepchem/data/tests/test_fasta_loader.py
@@ -1,9 +1,6 @@
 """
 Tests that FASTA files can be loaded.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __license__ = "MIT"
 
diff --git a/deepchem/data/tests/test_image_dataset.py b/deepchem/data/tests/test_image_dataset.py
index 63f3ef2091..76d09cf8a8 100644
--- a/deepchem/data/tests/test_image_dataset.py
+++ b/deepchem/data/tests/test_image_dataset.py
@@ -1,9 +1,6 @@
 """
 Tests for ImageDataset class
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_image_loader.py b/deepchem/data/tests/test_image_loader.py
index 24719eea21..1629e50703 100644
--- a/deepchem/data/tests/test_image_loader.py
+++ b/deepchem/data/tests/test_image_loader.py
@@ -1,9 +1,6 @@
 """
 Tests for ImageLoader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import unittest
 import tempfile
diff --git a/deepchem/data/tests/test_load.py b/deepchem/data/tests/test_load.py
index 0b0d8c366e..0e0d1546d7 100644
--- a/deepchem/data/tests/test_load.py
+++ b/deepchem/data/tests/test_load.py
@@ -1,9 +1,6 @@
 """
 Testing singletask/multitask data loading capabilities.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_merge.py b/deepchem/data/tests/test_merge.py
index cdbb3d2184..7bc85a7fd8 100644
--- a/deepchem/data/tests/test_merge.py
+++ b/deepchem/data/tests/test_merge.py
@@ -1,9 +1,6 @@
 """
 Testing singletask/multitask dataset merging
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_reload.py b/deepchem/data/tests/test_reload.py
index 447a9371d3..28f6236c0e 100644
--- a/deepchem/data/tests/test_reload.py
+++ b/deepchem/data/tests/test_reload.py
@@ -1,9 +1,6 @@
 """
 Testing reload.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_shuffle.py b/deepchem/data/tests/test_shuffle.py
index dc40b80dcf..2e22e09e63 100644
--- a/deepchem/data/tests/test_shuffle.py
+++ b/deepchem/data/tests/test_shuffle.py
@@ -1,9 +1,6 @@
 """
 Testing singletask/multitask dataset shuffling 
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/data/tests/test_support_generator.py b/deepchem/data/tests/test_support_generator.py
index 9f2973df25..d510e12a78 100644
--- a/deepchem/data/tests/test_support_generator.py
+++ b/deepchem/data/tests/test_support_generator.py
@@ -1,9 +1,6 @@
 """
 Simple Tests for Support Generation
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Han Altae-Tran and Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/dock/__init__.py b/deepchem/dock/__init__.py
index dff08f33b6..d08d58fac7 100644
--- a/deepchem/dock/__init__.py
+++ b/deepchem/dock/__init__.py
@@ -1,10 +1,6 @@
 """
 Imports all submodules 
 """
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.dock.pose_generation import PoseGenerator
 from deepchem.dock.pose_generation import VinaPoseGenerator
 from deepchem.dock.pose_scoring import PoseScorer
diff --git a/deepchem/dock/binding_pocket.py b/deepchem/dock/binding_pocket.py
index 480d03dd34..9000cc6c8d 100644
--- a/deepchem/dock/binding_pocket.py
+++ b/deepchem/dock/binding_pocket.py
@@ -1,9 +1,6 @@
 """
 Computes putative binding pockets on protein.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2017, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/dock/docking.py b/deepchem/dock/docking.py
index f91d0a3ba8..c34bd7f6e6 100644
--- a/deepchem/dock/docking.py
+++ b/deepchem/dock/docking.py
@@ -1,9 +1,6 @@
 """
 Docks protein-ligand pairs
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/dock/pose_generation.py b/deepchem/dock/pose_generation.py
index 8b80f36b14..35c3ebf809 100644
--- a/deepchem/dock/pose_generation.py
+++ b/deepchem/dock/pose_generation.py
@@ -1,9 +1,6 @@
 """
 Generates protein-ligand docked poses using Autodock Vina.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.utils import mol_xyz_util
 
 __author__ = "Bharath Ramsundar"
diff --git a/deepchem/dock/pose_scoring.py b/deepchem/dock/pose_scoring.py
index 2fb23cbc49..5f92caefae 100644
--- a/deepchem/dock/pose_scoring.py
+++ b/deepchem/dock/pose_scoring.py
@@ -1,9 +1,6 @@
 """
 Scores protein-ligand poses using DeepChem.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.feat import RdkitGridFeaturizer
 
 __author__ = "Bharath Ramsundar"
diff --git a/deepchem/dock/tests/test_binding_pocket.py b/deepchem/dock/tests/test_binding_pocket.py
index 62ebd940c1..0672bfd247 100644
--- a/deepchem/dock/tests/test_binding_pocket.py
+++ b/deepchem/dock/tests/test_binding_pocket.py
@@ -1,9 +1,6 @@
 """
 Tests for binding pocket detection.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/dock/tests/test_docking.py b/deepchem/dock/tests/test_docking.py
index 67da44389e..853b646e26 100644
--- a/deepchem/dock/tests/test_docking.py
+++ b/deepchem/dock/tests/test_docking.py
@@ -1,9 +1,6 @@
 """
 Tests for Docking 
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/dock/tests/test_pose_generation.py b/deepchem/dock/tests/test_pose_generation.py
index c40cc42af3..1f10d9576e 100644
--- a/deepchem/dock/tests/test_pose_generation.py
+++ b/deepchem/dock/tests/test_pose_generation.py
@@ -1,9 +1,6 @@
 """
 Tests for Pose Generation
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/dock/tests/test_pose_scoring.py b/deepchem/dock/tests/test_pose_scoring.py
index 8cdca220d6..1ae39eca55 100644
--- a/deepchem/dock/tests/test_pose_scoring.py
+++ b/deepchem/dock/tests/test_pose_scoring.py
@@ -1,9 +1,6 @@
 """
 Tests for Pose Scoring
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/__init__.py b/deepchem/feat/__init__.py
index 58823fb7bf..78ed0b6a8d 100644
--- a/deepchem/feat/__init__.py
+++ b/deepchem/feat/__init__.py
@@ -1,10 +1,6 @@
 """
 Making it easy to import in classes.
 """
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/atomic_coordinates.py b/deepchem/feat/atomic_coordinates.py
index 6b2a11807f..e2372bef47 100644
--- a/deepchem/feat/atomic_coordinates.py
+++ b/deepchem/feat/atomic_coordinates.py
@@ -1,9 +1,6 @@
 """
 Atomic coordinate featurizer.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Joseph Gomes and Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/basic.py b/deepchem/feat/basic.py
index fb29ba0d20..7afea234da 100644
--- a/deepchem/feat/basic.py
+++ b/deepchem/feat/basic.py
@@ -1,9 +1,6 @@
 """
 Basic molecular features.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Steven Kearnes"
 __copyright__ = "Copyright 2014, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/binding_pocket_features.py b/deepchem/feat/binding_pocket_features.py
index bf26d0e76a..2f98fbc61d 100644
--- a/deepchem/feat/binding_pocket_features.py
+++ b/deepchem/feat/binding_pocket_features.py
@@ -1,9 +1,6 @@
 """
 Featurizes proposed binding pockets.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2017, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/coulomb_matrices.py b/deepchem/feat/coulomb_matrices.py
index 2a550a44fe..c913fc2150 100644
--- a/deepchem/feat/coulomb_matrices.py
+++ b/deepchem/feat/coulomb_matrices.py
@@ -3,9 +3,6 @@
 
 See Montavon et al., _New Journal of Physics_ __15__ (2013) 095003.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Steven Kearnes"
 __copyright__ = "Copyright 2014, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/fingerprints.py b/deepchem/feat/fingerprints.py
index e82a2f94f4..75b62c4ac5 100644
--- a/deepchem/feat/fingerprints.py
+++ b/deepchem/feat/fingerprints.py
@@ -1,9 +1,6 @@
 """
 Topological fingerprints.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Steven Kearnes"
 __copyright__ = "Copyright 2014, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/graph_features.py b/deepchem/feat/graph_features.py
index 89d9ba91b9..1c06e7c2aa 100644
--- a/deepchem/feat/graph_features.py
+++ b/deepchem/feat/graph_features.py
@@ -1,6 +1,3 @@
-from __future__ import division
-from __future__ import unicode_literals
-
 import numpy as np
 from rdkit import Chem
 
diff --git a/deepchem/feat/mol_graphs.py b/deepchem/feat/mol_graphs.py
index 12ac1801a1..12974c9c8c 100644
--- a/deepchem/feat/mol_graphs.py
+++ b/deepchem/feat/mol_graphs.py
@@ -1,9 +1,6 @@
 """
 Data Structures used to represented molecules for convolutions.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Han Altae-Tran and Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/nnscore_utils.py b/deepchem/feat/nnscore_utils.py
index 656aeae025..6b58c04b71 100644
--- a/deepchem/feat/nnscore_utils.py
+++ b/deepchem/feat/nnscore_utils.py
@@ -1,9 +1,6 @@
 """
 Helper Classes and Functions for docking fingerprint computation.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar and Jacob Durrant"
 __license__ = "GNU General Public License"
 
diff --git a/deepchem/feat/raw_featurizer.py b/deepchem/feat/raw_featurizer.py
index ef1f053c7c..e0980e7113 100644
--- a/deepchem/feat/raw_featurizer.py
+++ b/deepchem/feat/raw_featurizer.py
@@ -1,8 +1,5 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.feat import Featurizer
 
 
diff --git a/deepchem/feat/rdkit_grid_featurizer.py b/deepchem/feat/rdkit_grid_featurizer.py
index 707d7cac1c..4bd7faa6b6 100644
--- a/deepchem/feat/rdkit_grid_featurizer.py
+++ b/deepchem/feat/rdkit_grid_featurizer.py
@@ -1,6 +1,3 @@
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar, Evan Feinberg, and Karl Leswing"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/smiles_featurizers.py b/deepchem/feat/smiles_featurizers.py
index 40b5fd8b5d..86451ec8b9 100644
--- a/deepchem/feat/smiles_featurizers.py
+++ b/deepchem/feat/smiles_featurizers.py
@@ -4,9 +4,6 @@
 SmilesToImage featurizer for ChemCeption models taken from https://arxiv.org/abs/1710.02238
 """
 
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Vignesh Ram Somnath"
 __license__ = "MIT"
 
diff --git a/deepchem/feat/tests/test_graph_features.py b/deepchem/feat/tests/test_graph_features.py
index 9d3b3d1753..7236aa7060 100644
--- a/deepchem/feat/tests/test_graph_features.py
+++ b/deepchem/feat/tests/test_graph_features.py
@@ -1,9 +1,6 @@
 """
 Tests for ConvMolFeaturizer. 
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Han Altae-Tran and Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/tests/test_mol_graphs.py b/deepchem/feat/tests/test_mol_graphs.py
index 6bd66c3396..e8c96806b8 100644
--- a/deepchem/feat/tests/test_mol_graphs.py
+++ b/deepchem/feat/tests/test_mol_graphs.py
@@ -1,9 +1,6 @@
 """
 Tests for Molecular Graph data structures. 
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Han Altae-Tran and Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/feat/tests/test_sdf_reader.py b/deepchem/feat/tests/test_sdf_reader.py
index 337d8d790f..cef516de90 100644
--- a/deepchem/feat/tests/test_sdf_reader.py
+++ b/deepchem/feat/tests/test_sdf_reader.py
@@ -1,9 +1,6 @@
 """
 Tests for importing .sdf files
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Joseph Gomes"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/hyper/gaussian_process.py b/deepchem/hyper/gaussian_process.py
index a01b8a16c5..251869fb37 100644
--- a/deepchem/hyper/gaussian_process.py
+++ b/deepchem/hyper/gaussian_process.py
@@ -1,9 +1,6 @@
 """
 Contains class for gaussian process hyperparameter optimizations.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import logging
 import numpy as np
 import tempfile
diff --git a/deepchem/hyper/tests/test_hyperparam_opt.py b/deepchem/hyper/tests/test_hyperparam_opt.py
index 56dba86c8b..41b4e2ac76 100644
--- a/deepchem/hyper/tests/test_hyperparam_opt.py
+++ b/deepchem/hyper/tests/test_hyperparam_opt.py
@@ -1,9 +1,6 @@
 """
 Integration tests for hyperparam optimization.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/metrics/tests/metrics_test.py b/deepchem/metrics/tests/metrics_test.py
index 0d355fd8e4..e9587c2f65 100644
--- a/deepchem/metrics/tests/metrics_test.py
+++ b/deepchem/metrics/tests/metrics_test.py
@@ -1,9 +1,6 @@
 """
 Tests for metricsT.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/metrics/tests/test_genomics.py b/deepchem/metrics/tests/test_genomics.py
index f00a0d1b5b..d5abf314c3 100644
--- a/deepchem/metrics/tests/test_genomics.py
+++ b/deepchem/metrics/tests/test_genomics.py
@@ -1,9 +1,6 @@
 """
 Test that genomic metrics work.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import unittest
 import os
 
diff --git a/deepchem/models/IRV.py b/deepchem/models/IRV.py
index 6dc03129c1..efb40e9d71 100644
--- a/deepchem/models/IRV.py
+++ b/deepchem/models/IRV.py
@@ -1,6 +1,3 @@
-from __future__ import division
-from __future__ import unicode_literals
-
 import logging
 import numpy as np
 import tensorflow as tf
diff --git a/deepchem/models/__init__.py b/deepchem/models/__init__.py
index 657e5d1c61..4d8f22c57e 100644
--- a/deepchem/models/__init__.py
+++ b/deepchem/models/__init__.py
@@ -1,9 +1,6 @@
 """
 Gathers all models in one place for convenient imports
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.models.models import Model
 from deepchem.models.keras_model import KerasModel
 from deepchem.models.sklearn_models import SklearnModel
diff --git a/deepchem/models/atomic_conv.py b/deepchem/models/atomic_conv.py
index 342a7b75b3..31333e6c70 100644
--- a/deepchem/models/atomic_conv.py
+++ b/deepchem/models/atomic_conv.py
@@ -1,6 +1,3 @@
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Joseph Gomes"
 __copyright__ = "Copyright 2017, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/models/callbacks.py b/deepchem/models/callbacks.py
index 0e026deecc..0ea0759dba 100644
--- a/deepchem/models/callbacks.py
+++ b/deepchem/models/callbacks.py
@@ -2,8 +2,6 @@
 Callback functions that can be invoked while fitting a KerasModel.
 """
 
-from __future__ import print_function
-
 import tensorflow as tf
 import sys
 
diff --git a/deepchem/models/chemnet_layers.py b/deepchem/models/chemnet_layers.py
index 0b2803309d..9439ea883c 100644
--- a/deepchem/models/chemnet_layers.py
+++ b/deepchem/models/chemnet_layers.py
@@ -2,9 +2,6 @@
 Contains implementations of layers used in ChemCeption and Smiles2Vec models.
 """
 
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Vignesh Ram Somnath"
 __license__ = "MIT"
 
diff --git a/deepchem/models/chemnet_models.py b/deepchem/models/chemnet_models.py
index 3be88c9d13..c2a6019974 100644
--- a/deepchem/models/chemnet_models.py
+++ b/deepchem/models/chemnet_models.py
@@ -3,9 +3,6 @@
 transfer learning protocol.
 """
 
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Vignesh Ram Somnath"
 __license__ = "MIT"
 
diff --git a/deepchem/models/fcnet.py b/deepchem/models/fcnet.py
index 4f7db9472a..640e426c28 100644
--- a/deepchem/models/fcnet.py
+++ b/deepchem/models/fcnet.py
@@ -1,8 +1,5 @@
 """TensorFlow implementation of fully connected networks.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import logging
 import warnings
 import time
diff --git a/deepchem/models/models.py b/deepchem/models/models.py
index a63e77c01c..993d915054 100644
--- a/deepchem/models/models.py
+++ b/deepchem/models/models.py
@@ -1,9 +1,6 @@
 """
 Contains an abstract base class that supports different ML models.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar and Joseph Gomes"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/models/multitask.py b/deepchem/models/multitask.py
index d16c706859..c6f7438647 100644
--- a/deepchem/models/multitask.py
+++ b/deepchem/models/multitask.py
@@ -1,9 +1,6 @@
 """
 Convenience class that lets singletask models fit on multitask data.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import sklearn
 import tempfile
diff --git a/deepchem/models/progressive_multitask.py b/deepchem/models/progressive_multitask.py
index 019d7e8829..b8c751ee8c 100644
--- a/deepchem/models/progressive_multitask.py
+++ b/deepchem/models/progressive_multitask.py
@@ -1,6 +1,3 @@
-from __future__ import division
-from __future__ import unicode_literals
-
 import time
 import numpy as np
 import tensorflow as tf
diff --git a/deepchem/models/robust_multitask.py b/deepchem/models/robust_multitask.py
index 988f0006b3..f7bf16f5d2 100644
--- a/deepchem/models/robust_multitask.py
+++ b/deepchem/models/robust_multitask.py
@@ -1,6 +1,3 @@
-from __future__ import division
-from __future__ import unicode_literals
-
 import numpy as np
 import tensorflow as tf
 import collections
diff --git a/deepchem/models/tests/test_api.py b/deepchem/models/tests/test_api.py
index 0d205aec50..1b090cbeca 100644
--- a/deepchem/models/tests/test_api.py
+++ b/deepchem/models/tests/test_api.py
@@ -1,9 +1,6 @@
 """
 Integration tests for singletask vector feature models.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/models/tests/test_atomic_conv.py b/deepchem/models/tests/test_atomic_conv.py
index a5032bc359..14543550d7 100644
--- a/deepchem/models/tests/test_atomic_conv.py
+++ b/deepchem/models/tests/test_atomic_conv.py
@@ -1,9 +1,6 @@
 """
 Tests for Atomic Convolutions.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 from nose.plugins.attrib import attr
 
 import os
diff --git a/deepchem/models/tests/test_generalize.py b/deepchem/models/tests/test_generalize.py
index ead2fe41d5..85d7ac60f6 100644
--- a/deepchem/models/tests/test_generalize.py
+++ b/deepchem/models/tests/test_generalize.py
@@ -2,9 +2,6 @@
 Tests to make sure deepchem models can fit models on easy datasets.
 """
 
-from __future__ import division
-from __future__ import unicode_literals
-
 from nose.plugins.attrib import attr
 
 __author__ = "Bharath Ramsundar"
diff --git a/deepchem/models/tests/test_multitask.py b/deepchem/models/tests/test_multitask.py
index 9cafba38f3..c1e51d6976 100644
--- a/deepchem/models/tests/test_multitask.py
+++ b/deepchem/models/tests/test_multitask.py
@@ -1,9 +1,6 @@
 """
 Integration tests for multitask datasets.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/models/tests/test_overfit.py b/deepchem/models/tests/test_overfit.py
index ad5c60a43a..50ac82e227 100644
--- a/deepchem/models/tests/test_overfit.py
+++ b/deepchem/models/tests/test_overfit.py
@@ -1,9 +1,6 @@
 """
 Tests to make sure deepchem models can overfit on tiny datasets.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 from nose.plugins.attrib import attr
 
 __author__ = "Bharath Ramsundar"
diff --git a/deepchem/models/tests/test_predict.py b/deepchem/models/tests/test_predict.py
index 0993d20a77..f8d959720b 100644
--- a/deepchem/models/tests/test_predict.py
+++ b/deepchem/models/tests/test_predict.py
@@ -1,9 +1,6 @@
 """
 Tests that deepchem models make deterministic predictions. 
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/models/tests/test_reload.py b/deepchem/models/tests/test_reload.py
index 165bfcc257..01a8fde382 100644
--- a/deepchem/models/tests/test_reload.py
+++ b/deepchem/models/tests/test_reload.py
@@ -1,9 +1,6 @@
 """
 Test reload for trained models.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/models/tests/test_singletask_to_multitask.py b/deepchem/models/tests/test_singletask_to_multitask.py
index f127d8a3e2..14ff960bdb 100644
--- a/deepchem/models/tests/test_singletask_to_multitask.py
+++ b/deepchem/models/tests/test_singletask_to_multitask.py
@@ -1,9 +1,6 @@
 """
 Testing singletask-to-multitask.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/molnet/__init__.py b/deepchem/molnet/__init__.py
index 7d896bc1af..6b83f8046b 100644
--- a/deepchem/molnet/__init__.py
+++ b/deepchem/molnet/__init__.py
@@ -1,6 +1,3 @@
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.molnet.load_function.bace_datasets import load_bace_classification, load_bace_regression
 from deepchem.molnet.load_function.bbbc_datasets import load_bbbc001, load_bbbc002
 from deepchem.molnet.load_function.bbbp_datasets import load_bbbp
diff --git a/deepchem/molnet/dnasim.py b/deepchem/molnet/dnasim.py
index 8020e51f20..b1729133db 100644
--- a/deepchem/molnet/dnasim.py
+++ b/deepchem/molnet/dnasim.py
@@ -1,4 +1,3 @@
-from __future__ import absolute_import, division, print_function
 from collections import OrderedDict
 import numpy as np
 
diff --git a/deepchem/molnet/load_function/bace_datasets.py b/deepchem/molnet/load_function/bace_datasets.py
index 44a57da586..e9700d397d 100644
--- a/deepchem/molnet/load_function/bace_datasets.py
+++ b/deepchem/molnet/load_function/bace_datasets.py
@@ -1,9 +1,6 @@
 """
 bace dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/bbbc_datasets.py b/deepchem/molnet/load_function/bbbc_datasets.py
index 766cd769e6..a500d58223 100644
--- a/deepchem/molnet/load_function/bbbc_datasets.py
+++ b/deepchem/molnet/load_function/bbbc_datasets.py
@@ -3,10 +3,6 @@
 
 This file contains image loaders for the BBBC dataset collection (https://data.broadinstitute.org/bbbc/image_sets.html).
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import numpy as np
 import logging
diff --git a/deepchem/molnet/load_function/bbbp_datasets.py b/deepchem/molnet/load_function/bbbp_datasets.py
index 9ff25102f3..97241e803a 100644
--- a/deepchem/molnet/load_function/bbbp_datasets.py
+++ b/deepchem/molnet/load_function/bbbp_datasets.py
@@ -1,9 +1,6 @@
 """
 Blood-Brain Barrier Penetration dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/cell_counting_datasets.py b/deepchem/molnet/load_function/cell_counting_datasets.py
index 718e2f2104..a92d70968b 100644
--- a/deepchem/molnet/load_function/cell_counting_datasets.py
+++ b/deepchem/molnet/load_function/cell_counting_datasets.py
@@ -5,9 +5,6 @@
 http://www.robots.ox.ac.uk/~vgg/research/counting/index_org.html. Labels aren't
 available for this dataset, so only raw images are provided.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/chembl25_datasets.py b/deepchem/molnet/load_function/chembl25_datasets.py
index 40eabac5c6..f908c83ded 100644
--- a/deepchem/molnet/load_function/chembl25_datasets.py
+++ b/deepchem/molnet/load_function/chembl25_datasets.py
@@ -1,10 +1,6 @@
 """
 ChEMBL dataset loader, for training ChemNet
 """
-
-from __future__ import print_function
-from __future__ import unicode_literals
-
 import os
 import numpy as np
 import logging
diff --git a/deepchem/molnet/load_function/chembl_datasets.py b/deepchem/molnet/load_function/chembl_datasets.py
index 0e4a24eb4b..6fea5de6e1 100644
--- a/deepchem/molnet/load_function/chembl_datasets.py
+++ b/deepchem/molnet/load_function/chembl_datasets.py
@@ -1,9 +1,6 @@
 """
 ChEMBL dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/clearance_datasets.py b/deepchem/molnet/load_function/clearance_datasets.py
index f4e8217474..b7c34d10eb 100644
--- a/deepchem/molnet/load_function/clearance_datasets.py
+++ b/deepchem/molnet/load_function/clearance_datasets.py
@@ -1,9 +1,6 @@
 """
 clearance dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/clintox_datasets.py b/deepchem/molnet/load_function/clintox_datasets.py
index 342b0d362e..55a007a7fe 100644
--- a/deepchem/molnet/load_function/clintox_datasets.py
+++ b/deepchem/molnet/load_function/clintox_datasets.py
@@ -2,10 +2,6 @@
 Clinical Toxicity (clintox) dataset loader.
 @author Caleb Geniesse
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/delaney_datasets.py b/deepchem/molnet/load_function/delaney_datasets.py
index babecd5a02..0ea6ff65c6 100644
--- a/deepchem/molnet/load_function/delaney_datasets.py
+++ b/deepchem/molnet/load_function/delaney_datasets.py
@@ -1,9 +1,6 @@
 """
 Delaney dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/factors_datasets.py b/deepchem/molnet/load_function/factors_datasets.py
index 1b6259064c..9fd216b409 100644
--- a/deepchem/molnet/load_function/factors_datasets.py
+++ b/deepchem/molnet/load_function/factors_datasets.py
@@ -1,10 +1,6 @@
 """
 FACTOR dataset loader
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import time
diff --git a/deepchem/molnet/load_function/hiv_datasets.py b/deepchem/molnet/load_function/hiv_datasets.py
index 9313a5afc2..91716be168 100644
--- a/deepchem/molnet/load_function/hiv_datasets.py
+++ b/deepchem/molnet/load_function/hiv_datasets.py
@@ -1,9 +1,6 @@
 """
 hiv dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/hopv_datasets.py b/deepchem/molnet/load_function/hopv_datasets.py
index 96b5b927cb..a13f16aa55 100644
--- a/deepchem/molnet/load_function/hopv_datasets.py
+++ b/deepchem/molnet/load_function/hopv_datasets.py
@@ -1,9 +1,6 @@
 """
 HOPV dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/hppb_datasets.py b/deepchem/molnet/load_function/hppb_datasets.py
index 94868cd8ae..e886621982 100644
--- a/deepchem/molnet/load_function/hppb_datasets.py
+++ b/deepchem/molnet/load_function/hppb_datasets.py
@@ -1,10 +1,6 @@
 """
 HPPB Dataset Loader.
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/kaggle_datasets.py b/deepchem/molnet/load_function/kaggle_datasets.py
index 0d7fe3b2c6..6fc7baf042 100644
--- a/deepchem/molnet/load_function/kaggle_datasets.py
+++ b/deepchem/molnet/load_function/kaggle_datasets.py
@@ -1,9 +1,6 @@
 """
 KAGGLE dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import time
diff --git a/deepchem/molnet/load_function/kinase_datasets.py b/deepchem/molnet/load_function/kinase_datasets.py
index 6b8571b1f5..53055b55f0 100644
--- a/deepchem/molnet/load_function/kinase_datasets.py
+++ b/deepchem/molnet/load_function/kinase_datasets.py
@@ -1,10 +1,6 @@
 """
 KINASE dataset loader
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import time
diff --git a/deepchem/molnet/load_function/lipo_datasets.py b/deepchem/molnet/load_function/lipo_datasets.py
index 9446b311c2..d0f01b08a1 100644
--- a/deepchem/molnet/load_function/lipo_datasets.py
+++ b/deepchem/molnet/load_function/lipo_datasets.py
@@ -1,9 +1,6 @@
 """
 Lipophilicity dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/muv_datasets.py b/deepchem/molnet/load_function/muv_datasets.py
index ded4811d1e..a79071ec53 100644
--- a/deepchem/molnet/load_function/muv_datasets.py
+++ b/deepchem/molnet/load_function/muv_datasets.py
@@ -1,9 +1,6 @@
 """
 MUV dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/nci_datasets.py b/deepchem/molnet/load_function/nci_datasets.py
index 102f579be1..ee4110b142 100644
--- a/deepchem/molnet/load_function/nci_datasets.py
+++ b/deepchem/molnet/load_function/nci_datasets.py
@@ -3,9 +3,6 @@
 Original Author - Bharath Ramsundar
 Author - Aneesh Pappu
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/pcba_datasets.py b/deepchem/molnet/load_function/pcba_datasets.py
index 4ce600133f..428e6064c1 100644
--- a/deepchem/molnet/load_function/pcba_datasets.py
+++ b/deepchem/molnet/load_function/pcba_datasets.py
@@ -1,9 +1,6 @@
 """
 PCBA dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/pdbbind_datasets.py b/deepchem/molnet/load_function/pdbbind_datasets.py
index 389bd4ae89..01a4007f81 100644
--- a/deepchem/molnet/load_function/pdbbind_datasets.py
+++ b/deepchem/molnet/load_function/pdbbind_datasets.py
@@ -1,10 +1,6 @@
 """
 PDBBind dataset loader.
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import logging
 import multiprocessing
 import os
diff --git a/deepchem/molnet/load_function/ppb_datasets.py b/deepchem/molnet/load_function/ppb_datasets.py
index f4c26dd64f..38ae43a137 100644
--- a/deepchem/molnet/load_function/ppb_datasets.py
+++ b/deepchem/molnet/load_function/ppb_datasets.py
@@ -1,9 +1,6 @@
 """
 PPB dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/qm7_datasets.py b/deepchem/molnet/load_function/qm7_datasets.py
index adb3151112..51951bd80e 100644
--- a/deepchem/molnet/load_function/qm7_datasets.py
+++ b/deepchem/molnet/load_function/qm7_datasets.py
@@ -1,9 +1,6 @@
 """
 qm7 dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import numpy as np
 import deepchem
diff --git a/deepchem/molnet/load_function/qm8_datasets.py b/deepchem/molnet/load_function/qm8_datasets.py
index cff3f057cc..b3baf17876 100644
--- a/deepchem/molnet/load_function/qm8_datasets.py
+++ b/deepchem/molnet/load_function/qm8_datasets.py
@@ -1,9 +1,6 @@
 """
 qm8 dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import deepchem
 import logging
diff --git a/deepchem/molnet/load_function/qm9_datasets.py b/deepchem/molnet/load_function/qm9_datasets.py
index e3c68debb9..71c5ca6846 100644
--- a/deepchem/molnet/load_function/qm9_datasets.py
+++ b/deepchem/molnet/load_function/qm9_datasets.py
@@ -1,9 +1,6 @@
 """
 qm9 dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/sampl_datasets.py b/deepchem/molnet/load_function/sampl_datasets.py
index 0694188551..1b93848491 100644
--- a/deepchem/molnet/load_function/sampl_datasets.py
+++ b/deepchem/molnet/load_function/sampl_datasets.py
@@ -1,9 +1,6 @@
 """
 SAMPL dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/sider_datasets.py b/deepchem/molnet/load_function/sider_datasets.py
index bffb59714a..3191c8c937 100644
--- a/deepchem/molnet/load_function/sider_datasets.py
+++ b/deepchem/molnet/load_function/sider_datasets.py
@@ -1,9 +1,6 @@
 """
 SIDER dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/sweetlead_datasets.py b/deepchem/molnet/load_function/sweetlead_datasets.py
index 3b4ddc41b5..bdc9f75b51 100644
--- a/deepchem/molnet/load_function/sweetlead_datasets.py
+++ b/deepchem/molnet/load_function/sweetlead_datasets.py
@@ -1,10 +1,6 @@
 """
 SWEET dataset loader.
 """
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import numpy as np
 import shutil
diff --git a/deepchem/molnet/load_function/thermosol_datasets.py b/deepchem/molnet/load_function/thermosol_datasets.py
index 8115462523..cc2b022c70 100644
--- a/deepchem/molnet/load_function/thermosol_datasets.py
+++ b/deepchem/molnet/load_function/thermosol_datasets.py
@@ -1,10 +1,6 @@
 """
 Thermodynamic Solubility Dataset Loader
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/tox21_datasets.py b/deepchem/molnet/load_function/tox21_datasets.py
index 61b42ba618..08cab09b3c 100644
--- a/deepchem/molnet/load_function/tox21_datasets.py
+++ b/deepchem/molnet/load_function/tox21_datasets.py
@@ -1,9 +1,6 @@
 """
 Tox21 dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/toxcast_datasets.py b/deepchem/molnet/load_function/toxcast_datasets.py
index 9fade31072..e79191eeae 100644
--- a/deepchem/molnet/load_function/toxcast_datasets.py
+++ b/deepchem/molnet/load_function/toxcast_datasets.py
@@ -1,9 +1,6 @@
 """
 TOXCAST dataset loader.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import deepchem
diff --git a/deepchem/molnet/load_function/uspto_datasets.py b/deepchem/molnet/load_function/uspto_datasets.py
index 83e6069933..a7cb78b22f 100644
--- a/deepchem/molnet/load_function/uspto_datasets.py
+++ b/deepchem/molnet/load_function/uspto_datasets.py
@@ -3,10 +3,6 @@
 
 This file contains loaders for synthetic reaction datasets from the US Patenent Office. http://nextmovesoftware.com/blog/2014/02/27/unleashing-over-a-million-reactions-into-the-wild/.
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import csv
 import logging
diff --git a/deepchem/molnet/load_function/uv_datasets.py b/deepchem/molnet/load_function/uv_datasets.py
index 967769f298..07e9654d2c 100644
--- a/deepchem/molnet/load_function/uv_datasets.py
+++ b/deepchem/molnet/load_function/uv_datasets.py
@@ -1,10 +1,6 @@
 """
 UV Dataset loader
 """
-
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import logging
 import time
diff --git a/deepchem/molnet/run_benchmark.py b/deepchem/molnet/run_benchmark.py
index c25a0906f4..c9cb3d7df8 100644
--- a/deepchem/molnet/run_benchmark.py
+++ b/deepchem/molnet/run_benchmark.py
@@ -4,9 +4,6 @@
 
 @author: Zhenqin Wu
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import time
 import csv
diff --git a/deepchem/molnet/run_benchmark_low_data.py b/deepchem/molnet/run_benchmark_low_data.py
index 21ed2618b1..9eafdd041f 100644
--- a/deepchem/molnet/run_benchmark_low_data.py
+++ b/deepchem/molnet/run_benchmark_low_data.py
@@ -5,10 +5,6 @@
 @author: Zhenqin Wu
 """
 '''
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 import time
 import csv
diff --git a/deepchem/molnet/run_benchmark_models.py b/deepchem/molnet/run_benchmark_models.py
index 17ee8887bf..37c80a0669 100644
--- a/deepchem/molnet/run_benchmark_models.py
+++ b/deepchem/molnet/run_benchmark_models.py
@@ -5,9 +5,6 @@
 
 @author: zqwu
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import numpy as np
 import tensorflow as tf
 import deepchem
diff --git a/deepchem/molnet/tests/test_molnet.py b/deepchem/molnet/tests/test_molnet.py
index 4330ee65d9..56283215b0 100644
--- a/deepchem/molnet/tests/test_molnet.py
+++ b/deepchem/molnet/tests/test_molnet.py
@@ -1,9 +1,6 @@
 """
 Tests for molnet function
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import csv
 import tempfile
 import unittest
diff --git a/deepchem/splits/__init__.py b/deepchem/splits/__init__.py
index e3e4aa8a84..97088cc53d 100644
--- a/deepchem/splits/__init__.py
+++ b/deepchem/splits/__init__.py
@@ -1,9 +1,6 @@
 """
 Gathers all splitters in one place for convenient imports
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 # TODO(rbharath): Get rid of * import
 from deepchem.splits.splitters import *
 from deepchem.splits.splitters import ScaffoldSplitter
diff --git a/deepchem/splits/splitters.py b/deepchem/splits/splitters.py
index db34d348d5..43e8ca40f3 100644
--- a/deepchem/splits/splitters.py
+++ b/deepchem/splits/splitters.py
@@ -1,9 +1,6 @@
 """
 Contains an abstract base class that supports chemically aware data splits.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import random
 
 __author__ = "Bharath Ramsundar, Aneesh Pappu "
diff --git a/deepchem/splits/task_splitter.py b/deepchem/splits/task_splitter.py
index 0b83494ad6..6fe63ac6a2 100644
--- a/deepchem/splits/task_splitter.py
+++ b/deepchem/splits/task_splitter.py
@@ -1,9 +1,6 @@
 """
 Contains an abstract base class that supports chemically aware data splits.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/splits/tests/test_splitter.py b/deepchem/splits/tests/test_splitter.py
index 6153638ee4..cef6c84b8e 100644
--- a/deepchem/splits/tests/test_splitter.py
+++ b/deepchem/splits/tests/test_splitter.py
@@ -1,9 +1,6 @@
 """
 Tests for splitter objects.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar, Aneesh Pappu"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/splits/tests/test_task_splitter.py b/deepchem/splits/tests/test_task_splitter.py
index a365db7295..c975a4e8a7 100644
--- a/deepchem/splits/tests/test_task_splitter.py
+++ b/deepchem/splits/tests/test_task_splitter.py
@@ -1,9 +1,6 @@
 """
 Tests for splitter objects.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar, Aneesh Pappu"
 __copyright__ = "Copyright 2016, Stanford University"
 __license__ = "MIT"
diff --git a/deepchem/trans/__init__.py b/deepchem/trans/__init__.py
index 6a2017013c..2210420f67 100644
--- a/deepchem/trans/__init__.py
+++ b/deepchem/trans/__init__.py
@@ -1,9 +1,6 @@
 """
 Gathers all transformers in one place for convenient imports
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.trans.transformers import undo_transforms
 from deepchem.trans.transformers import undo_grad_transforms
 from deepchem.trans.transformers import LogTransformer
diff --git a/deepchem/trans/tests/test_transformers.py b/deepchem/trans/tests/test_transformers.py
index 583739af0a..5391cc2522 100644
--- a/deepchem/trans/tests/test_transformers.py
+++ b/deepchem/trans/tests/test_transformers.py
@@ -1,9 +1,6 @@
 """
 Tests for transformer objects.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 from deepchem.molnet import load_delaney
 from deepchem.trans.transformers import FeaturizationTransformer
 from deepchem.trans.transformers import DataTransforms
diff --git a/deepchem/trans/transformers.py b/deepchem/trans/transformers.py
index 84b4d50e8b..6529b2836f 100644
--- a/deepchem/trans/transformers.py
+++ b/deepchem/trans/transformers.py
@@ -2,9 +2,6 @@
 """
 Contains an abstract base class that supports data transformations.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 import os
 
 import numpy as np
diff --git a/deepchem/utils/evaluate.py b/deepchem/utils/evaluate.py
index ddd991ac66..70649ddf7f 100644
--- a/deepchem/utils/evaluate.py
+++ b/deepchem/utils/evaluate.py
@@ -1,10 +1,6 @@
 """
 Utility functions to evaluate models on datasets.
 """
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 import csv
 import numpy as np
 import warnings
diff --git a/deepchem/utils/save.py b/deepchem/utils/save.py
index 5e5a9aadb3..df378414b6 100644
--- a/deepchem/utils/save.py
+++ b/deepchem/utils/save.py
@@ -1,10 +1,6 @@
 """
 Simple utils to save and load from disk.
 """
-from __future__ import print_function
-from __future__ import division
-from __future__ import unicode_literals
-
 import joblib
 import gzip
 import json
diff --git a/deepchem/utils/test/test_seq.py b/deepchem/utils/test/test_seq.py
index 972e61ed29..579d2dc586 100644
--- a/deepchem/utils/test/test_seq.py
+++ b/deepchem/utils/test/test_seq.py
@@ -1,9 +1,6 @@
 """
 Tests that sequence handling utilities work.
 """
-from __future__ import division
-from __future__ import unicode_literals
-
 __author__ = "Bharath Ramsundar"
 __license__ = "MIT"