diff --git a/lessons/4-ComputerVision/07-ConvNets/pytorchcv.py b/lessons/4-ComputerVision/07-ConvNets/pytorchcv.py
index 19ff1c5c89..ecde1e450a 100644
--- a/lessons/4-ComputerVision/07-ConvNets/pytorchcv.py
+++ b/lessons/4-ComputerVision/07-ConvNets/pytorchcv.py
@@ -134,7 +134,7 @@ def check_image(fn):
         im = Image.open(fn)
         im.verify()
         return True
-    except:
+    except Exception:
         return False
     
 def check_image_dir(path):
diff --git a/lessons/4-ComputerVision/07-ConvNets/tfcv.py b/lessons/4-ComputerVision/07-ConvNets/tfcv.py
index c5aff5018f..43ca99dfcc 100644
--- a/lessons/4-ComputerVision/07-ConvNets/tfcv.py
+++ b/lessons/4-ComputerVision/07-ConvNets/tfcv.py
@@ -48,7 +48,7 @@ def check_image(fn):
         im = Image.open(fn)
         im.verify()
         return im.format=='JPEG'
-    except:
+    except Exception:
         return False
     
 def check_image_dir(path):
diff --git a/lessons/4-ComputerVision/08-TransferLearning/pytorchcv.py b/lessons/4-ComputerVision/08-TransferLearning/pytorchcv.py
index 19ff1c5c89..ecde1e450a 100644
--- a/lessons/4-ComputerVision/08-TransferLearning/pytorchcv.py
+++ b/lessons/4-ComputerVision/08-TransferLearning/pytorchcv.py
@@ -134,7 +134,7 @@ def check_image(fn):
         im = Image.open(fn)
         im.verify()
         return True
-    except:
+    except Exception:
         return False
     
 def check_image_dir(path):
diff --git a/lessons/4-ComputerVision/08-TransferLearning/tfcv.py b/lessons/4-ComputerVision/08-TransferLearning/tfcv.py
index c5aff5018f..43ca99dfcc 100644
--- a/lessons/4-ComputerVision/08-TransferLearning/tfcv.py
+++ b/lessons/4-ComputerVision/08-TransferLearning/tfcv.py
@@ -48,7 +48,7 @@ def check_image(fn):
         im = Image.open(fn)
         im.verify()
         return im.format=='JPEG'
-    except:
+    except Exception:
         return False
     
 def check_image_dir(path):