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-rw-r--r--numpy/lib/arraypad.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/numpy/lib/arraypad.py b/numpy/lib/arraypad.py
index de909bc87..8a7c3a067 100644
--- a/numpy/lib/arraypad.py
+++ b/numpy/lib/arraypad.py
@@ -754,7 +754,7 @@ def pad(array, pad_width, mode=None, **kwargs):
kwargs[i] = _normalize_shape(narray, kwargs[i])
elif mode == None:
raise ValueError('Keyword "mode" must be a function or one of %s.' %
- (modefunc.keys(),))
+ (list(modefunc.keys()),))
else:
# User supplied function, I hope
function = mode