MAINT: refactor "for ... in range(len(" statements

1 files changed, 6 insertions, 6 deletions

diff --git a/numpy/core/records.py b/numpy/core/records.py
index b3474ad01..2c20b7d45 100644
--- a/numpy/core/records.py
+++ b/numpy/core/records.py
@@ -664,17 +664,17 @@ def fromarrays(arrayList, dtype=None, shape=None, formats=None,
     if nn > 0:
         shape = shape[:-nn]
 
+    _array = recarray(shape, descr)
+
+    # populate the record array (makes a copy)
     for k, obj in enumerate(arrayList):
         nn = descr[k].ndim
         testshape = obj.shape[:obj.ndim - nn]
+        name = _names[k]
         if testshape != shape:
-            raise ValueError("array-shape mismatch in array %d" % k)
+            raise ValueError(f'array-shape mismatch in array {k} ("{name}")')
 
-    _array = recarray(shape, descr)
-
-    # populate the record array (makes a copy)
-    for i in range(len(arrayList)):
-        _array[_names[i]] = arrayList[i]
+        _array[name] = obj
 
     return _array