From d7de4ad70d6794b36e4789e4f6146a884113bd66 Mon Sep 17 00:00:00 2001
From: ayir <navneet.nmk@gmail.com>
Date: Wed, 10 Apr 2019 17:00:25 +0200
Subject: ENH: add clearer error message for diff(0-d)

---
 numpy/lib/function_base.py | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'numpy/lib/function_base.py')

diff --git a/numpy/lib/function_base.py b/numpy/lib/function_base.py
index fb40ef927..7a405b382 100644
--- a/numpy/lib/function_base.py
+++ b/numpy/lib/function_base.py
@@ -1235,6 +1235,8 @@ def diff(a, n=1, axis=-1, prepend=np._NoValue, append=np._NoValue):
 
     a = asanyarray(a)
     nd = a.ndim
+    if nd == 0:
+        raise ValueError("diff requires input that is at least one dimensional")
     axis = normalize_axis_index(axis, nd)
 
     combined = []
-- 
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