Added some chained exceptions

2 files changed, 8 insertions, 8 deletions

diff --git a/numpy/linalg/linalg.py b/numpy/linalg/linalg.py
index eac6267c6..6d3afdd49 100644
--- a/numpy/linalg/linalg.py
+++ b/numpy/linalg/linalg.py
@@ -622,8 +622,8 @@ def matrix_power(a, n):
 
     try:
         n = operator.index(n)
-    except TypeError:
-        raise TypeError("exponent must be an integer")
+    except TypeError as e:
+        raise TypeError("exponent must be an integer") from e
 
     # Fall back on dot for object arrays. Object arrays are not supported by
     # the current implementation of matmul using einsum
@@ -2540,8 +2540,8 @@ def norm(x, ord=None, axis=None, keepdims=False):
     elif not isinstance(axis, tuple):
         try:
             axis = int(axis)
-        except Exception:
-            raise TypeError("'axis' must be None, an integer or a tuple of integers")
+        except Exception as e:
+            raise TypeError("'axis' must be None, an integer or a tuple of integers") from e
         axis = (axis,)
 
     if len(axis) == 1:
diff --git a/numpy/polynomial/polyutils.py b/numpy/polynomial/polyutils.py
index ec7ba6f1d..b1cf07e8a 100644
--- a/numpy/polynomial/polyutils.py
+++ b/numpy/polynomial/polyutils.py
@@ -193,8 +193,8 @@ def as_series(alist, trim=True):
     else:
         try:
             dtype = np.common_type(*arrays)
-        except Exception:
-            raise ValueError("Coefficient arrays have no common type")
+        except Exception as e:
+            raise ValueError("Coefficient arrays have no common type") from e
         ret = [np.array(a, copy=True, dtype=dtype) for a in arrays]
     return ret
 
@@ -777,7 +777,7 @@ def _deprecate_as_int(x, desc):
     """
     try:
         return operator.index(x)
-    except TypeError:
+    except TypeError as e:
         # Numpy 1.17.0, 2019-03-11
         try:
             ix = int(x)
@@ -793,4 +793,4 @@ def _deprecate_as_int(x, desc):
                 )
                 return ix
 
-        raise TypeError(f"{desc} must be an integer")
+        raise TypeError(f"{desc} must be an integer") from e