Do not use bare except: clauses

https://docs.python.org/2/howto/doanddont.html#except

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

Author: andersk

arrayfire/__init__.py

@@ -50,7 +50,7 @@
 
 try:
     import pycuda.autoinit
-except:
+except ImportError:
     pass
 
 from .library    import *

arrayfire/array.py

@@ -1310,7 +1310,7 @@ def display(a, precision=4):
             st = expr[0].find('(') + 1
             en = expr[0].rfind(')')
             name = expr[0][st:en]
-    except:
+    except IndexError:
         pass
 
     safe_call(backend.get().af_print_array_gen(name.encode('utf-8'),

arrayfire/interop.py

@@ -75,6 +75,9 @@ def _cc_to_af_array(in_ptr, ndim, in_shape, in_dtype, is_device=False, copy = Tr
 
 try:
     import numpy as np
+except ImportError:
+    AF_NUMPY_FOUND=False
+else:
     from numpy import ndarray as NumpyArray
     from .data import reorder
 
@@ -112,11 +115,12 @@ def np_to_af_array(np_arr, copy=True):
             return np_to_af_array(np_arr.copy())
 
     from_ndarray = np_to_af_array
-except:
-    AF_NUMPY_FOUND=False
 
 try:
     import pycuda.gpuarray
+except ImportError:
+    AF_PYCUDA_FOUND=False
+else:
     from pycuda.gpuarray import GPUArray as CudaArray
     AF_PYCUDA_FOUND=True
 
@@ -154,11 +158,12 @@ def pycuda_to_af_array(pycu_arr, copy=True):
             return _cc_to_af_array(in_ptr, pycu_arr.ndim, in_shape, in_dtype, True, copy)
         else:
             return pycuda_to_af_array(pycu_arr.copy())
-except:
-    AF_PYCUDA_FOUND=False
 
 try:
     from pyopencl.array import Array as OpenclArray
+except ImportError:
+    AF_PYOPENCL_FOUND=False
+else:
     from .opencl import add_device_context as _add_device_context
     from .opencl import set_device_context as _set_device_context
     from .opencl import get_device_id as _get_device_id
@@ -221,11 +226,12 @@ def pyopencl_to_af_array(pycl_arr, copy=True):
             return _cc_to_af_array(in_ptr, pycl_arr.ndim, in_shape, in_dtype, True, copy)
         else:
             return pyopencl_to_af_array(pycl_arr.copy())
-except:
-    AF_PYOPENCL_FOUND=False
 
 try:
     import numba
+except ImportError:
+    AF_NUMBA_FOUND=False
+else:
     from numba import cuda
     NumbaCudaArray = cuda.cudadrv.devicearray.DeviceNDArray
     AF_NUMBA_FOUND=True
@@ -264,8 +270,6 @@ def numba_to_af_array(nb_arr, copy=True):
             return _cc_to_af_array(in_ptr, nb_arr.ndim, in_shape, in_dtype, True, copy)
         else:
             return numba_to_af_array(nb_arr.copy())
-except:
-    AF_NUMBA_FOUND=False
 
 def to_array(in_array, copy = True):
     """

arrayfire/library.py

@@ -47,7 +47,7 @@
     from enum import Enum as _Enum
     def _Enum_Type(v):
         return v
-except:
+except ImportError:
     class _MetaEnum(type):
         def __init__(cls, name, bases, attrs):
             for attrname, attrvalue in attrs.iteritems():
@@ -417,15 +417,15 @@ def _setup():
 
     try:
         AF_PATH = os.environ['AF_PATH']
-    except:
+    except KeyError:
         AF_PATH = None
         pass
 
     AF_SEARCH_PATH = AF_PATH
 
     try:
         CUDA_PATH = os.environ['CUDA_PATH']
-    except:
+    except KeyError:
         CUDA_PATH= None
         pass
 
@@ -534,7 +534,7 @@ def __init__(self):
         for libname in libnames:
             try:
                 ct.cdll.LoadLibrary(libname)
-            except:
+            except OSError:
                 pass
 
         c_dim4 = c_dim_t*4
@@ -555,7 +555,7 @@ def __init__(self):
                         self.__name = __name
                         clib.af_release_array(out)
                     break;
-                except:
+                except OSError:
                     pass
 
         if (self.__name is None):

arrayfire/tests/simple/_util.py

@@ -24,7 +24,7 @@ def run(self, name_list=None, verbose=False):
             self.print_log = ''
             try:
                 test = self[key]
-            except:
+            except KeyError:
                 print(self.print_str % (key, "NOTFOUND"))
                 continue
 

examples/benchmarks/bench_blas.py

@@ -16,7 +16,7 @@
 
 try:
     import numpy as np
-except:
+except ImportError:
     np = None
 
 

examples/benchmarks/bench_cg.py

@@ -16,13 +16,13 @@
 
 try:
     import numpy as np
-except:
+except ImportError:
     np = None
 
 try:
     from scipy import sparse as sp
     from scipy.sparse import linalg
-except:
+except ImportError:
     sp = None
 
 

examples/benchmarks/bench_fft.py

@@ -16,7 +16,7 @@
 
 try:
     import numpy as np
-except:
+except ImportError:
     np = None
 
 

examples/benchmarks/monte_carlo_pi.py

@@ -16,7 +16,7 @@
 
 try:
     import numpy as np
-except:
+except ImportError:
     np = None
 
 #alias range / xrange because xrange is faster than range in python2