Change TypeErrors to ValueErrors

Author: reidy-p

pandas/core/frame.py

@@ -1279,7 +1279,7 @@ def from_items(cls, items, columns=None, orient='columns'):
 
             except ValueError:
                 if not is_nested_list_like(values):
-                    raise TypeError('The value in each (key, value) pair must '
+                    raise ValueError('The value in each (key, value) pair must '
                                     'be an array, Series, or dict')
 
         elif orient == 'index':
@@ -1297,7 +1297,7 @@ def from_items(cls, items, columns=None, orient='columns'):
 
             except TypeError:
                 if not is_nested_list_like(values):
-                    raise TypeError('The value in each (key, value) pair must '
+                    raise ValueError('The value in each (key, value) pair must '
                                     'be an array, Series, or dict')
 
         else:  # pragma: no cover

pandas/tests/frame/test_constructors.py

@@ -1207,12 +1207,12 @@ def test_constructor_from_items(self):
 
     def test_constructor_from_items_scalars(self):
         # GH 17312
-        with tm.assert_raises_regex(TypeError,
+        with tm.assert_raises_regex(ValueError,
                                     'The value in each \(key, value\) '
                                     'pair must be an array, Series, or dict'):
             DataFrame.from_items([('A', 1), ('B', 4)])
 
-        with tm.assert_raises_regex(TypeError,
+        with tm.assert_raises_regex(ValueError,
                                     'The value in each \(key, value\) '
                                     'pair must be an array, Series, or dict'):
             DataFrame.from_items([('A', 1), ('B', 2)], columns=['col1'],