Made exceptions more explicit

Author: pintohutch

nipype/interfaces/tests/test_io.py

@@ -23,15 +23,15 @@
 try:
     import boto
     from boto.s3.connection import S3Connection, OrdinaryCallingFormat
-except:
+except ImportError:
     noboto = True
 
 # Check for boto3
 noboto3 = False
 try:
     import boto3
     from botocore.utils import fix_s3_host
-except:
+except ImportError:
     noboto3 = True
 
 # Check for fakes3
@@ -42,7 +42,7 @@
         fakes3 = True
     else:
         fakes3 = False
-except:
+except subprocess.CalledProcessError:
     fakes3 = False
 
 def test_datagrabber():