diff --git a/deepchem/data/data_loader.py b/deepchem/data/data_loader.py
index 5482c286ed..4ee7b4d4b6 100644
--- a/deepchem/data/data_loader.py
+++ b/deepchem/data/data_loader.py
@@ -19,15 +19,16 @@
 from deepchem.utils.genomics_utils import encode_bio_sequence
 
 try:
+    from deepchem.feat.dft_data import DFTEntry
     import yaml
     from yaml.loader import SafeLoader
-except (ImportError, ModuleNotFoundError) as e:
-    warnings.warn("PyYAML is not installed. Please install PyYAML to use the DataLoader class.")
+except:
+    pass
 
 try:
     import pysam
-except (ImportError, ModuleNotFoundError) as e:
-    warnings.warn("pysam is not installed. Please install pysam to use the DataLoader class.")
+except:
+    pass
 
 logger = logging.getLogger(__name__)
 
@@ -1879,7 +1880,6 @@ def _featurize_shard(self, shard):
         -------
         x: featurized shard (DFTEntry objects)
         """
-        from deepchem.feat.dft_data import DFTEntry
         try:
             e_type = shard['e_type']
             if 'true_val' in shard.keys():
diff --git a/deepchem/feat/dft_data.py b/deepchem/feat/dft_data.py
index 84fedd9ee4..96b32fb8e7 100644
--- a/deepchem/feat/dft_data.py
+++ b/deepchem/feat/dft_data.py
@@ -12,7 +12,7 @@
     from dqc.system.mol import Mol
     from dqc.system.base_system import BaseSystem
     from deepchem.utils.dftutils import KSCalc
-except (ImportError, ModuleNotFoundError) as e:
+except:
     pass
 from deepchem.utils.dft_utils import parse_moldesc, BaseGrid
 
diff --git a/deepchem/models/dft/dftxc.py b/deepchem/models/dft/dftxc.py
index 08c2c12e63..f123356540 100644
--- a/deepchem/models/dft/dftxc.py
+++ b/deepchem/models/dft/dftxc.py
@@ -1,7 +1,7 @@
 """Derived from https://github.com/mfkasim1/xcnn/blob/f2cb9777da2961ac553f256ecdcca3e314a538ca/xcdnn2/litmodule.py"""
 from deepchem.models.dft.scf import XCNNSCF
-import torch
 from deepchem.models.dft.nnxc import HybridXC
+import torch
 from deepchem.models.losses import Loss, L2Loss
 from deepchem.models.torch_models.torch_model import TorchModel
 from typing import Tuple, Optional, List, Any
diff --git a/deepchem/models/dft/nnxc.py b/deepchem/models/dft/nnxc.py
index 01ef374c63..3941007f0e 100644
--- a/deepchem/models/dft/nnxc.py
+++ b/deepchem/models/dft/nnxc.py
@@ -8,7 +8,7 @@
     from dqc.api.getxc import get_xc
     from dqc.xc.base_xc import BaseXC
     from dqc.utils.safeops import safenorm, safepow
-except (ImportError, ModuleNotFoundError) as e:
+except:
     pass
 
 
diff --git a/deepchem/models/tests/test_dens.py b/deepchem/models/tests/test_dens.py
index 19794c02b4..821f1c12da 100644
--- a/deepchem/models/tests/test_dens.py
+++ b/deepchem/models/tests/test_dens.py
@@ -5,7 +5,7 @@
     import torch
     from deepchem.models.losses import DensityProfileLoss
     has_dqc = True
-except (ImportError, ModuleNotFoundError) as e:
+except:
     has_dqc = False
 import numpy as np
 import pytest
diff --git a/deepchem/models/tests/test_nnxc.py b/deepchem/models/tests/test_nnxc.py
index c7a83d2f6d..e0a8a00781 100644
--- a/deepchem/models/tests/test_nnxc.py
+++ b/deepchem/models/tests/test_nnxc.py
@@ -5,7 +5,7 @@
     import torch.nn as nn
     from dqc.utils.datastruct import ValGrad
     has_dqc = True
-except (ImportError, ModuleNotFoundError) as e:
+except:
     has_dqc = False