ENH: Add annotations to the last 8 functions in numpy.core.fromnumeric (#16729)

* Added annotations for 8 new functions

The 8 respective functions, all located in `np.core.fromnumeric`, consist of:
* `prod`
* `cumprod`
* `ndim`
* `size`
* `around`
* `mean`
* `std`
* `var`

Co-authored-by: Eric Wieser <wieser.eric@gmail.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/numpy/tests/typing/fail/fromnumeric.py b/numpy/tests/typing/fail/fromnumeric.py
index 66f8a89d0..c9156895d 100644
--- a/numpy/tests/typing/fail/fromnumeric.py
+++ b/numpy/tests/typing/fail/fromnumeric.py
@@ -124,3 +124,31 @@ np.amin(a, keepdims=1.0)  # E: No overload variant of "amin" matches argument ty
 np.amin(a, out=1.0)  # E: No overload variant of "amin" matches argument type
 np.amin(a, initial=[1.0])  # E: No overload variant of "amin" matches argument type
 np.amin(a, where=[1.0])  # E: List item 0 has incompatible type
+
+np.prod(a, axis=1.0)  # E: No overload variant of "prod" matches argument type
+np.prod(a, out=False)  # E: No overload variant of "prod" matches argument type
+np.prod(a, keepdims=1.0)  # E: No overload variant of "prod" matches argument type
+np.prod(a, initial=int)  # E: No overload variant of "prod" matches argument type
+np.prod(a, where=1.0)  # E: No overload variant of "prod" matches argument type
+
+np.cumprod(a, axis=1.0)  # E: Argument "axis" to "cumprod" has incompatible type
+np.cumprod(a, out=False)  # E: Argument "out" to "cumprod" has incompatible type
+
+np.size(a, axis=1.0)  # E: Argument "axis" to "size" has incompatible type
+
+np.around(a, decimals=1.0)  # E: No overload variant of "around" matches argument type
+np.around(a, out=type)  # E: No overload variant of "around" matches argument type
+
+np.mean(a, axis=1.0)  # E: No overload variant of "mean" matches argument type
+np.mean(a, out=False)  # E: No overload variant of "mean" matches argument type
+np.mean(a, keepdims=1.0)  # E: No overload variant of "mean" matches argument type
+
+np.std(a, axis=1.0)  # E: No overload variant of "std" matches argument type
+np.std(a, out=False)  # E: No overload variant of "std" matches argument type
+np.std(a, ddof='test')  # E: No overload variant of "std" matches argument type
+np.std(a, keepdims=1.0)  # E: No overload variant of "std" matches argument type
+
+np.var(a, axis=1.0)  # E: No overload variant of "var" matches argument type
+np.var(a, out=False)  # E: No overload variant of "var" matches argument type
+np.var(a, ddof='test')  # E: No overload variant of "var" matches argument type
+np.var(a, keepdims=1.0)  # E: No overload variant of "var" matches argument type