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-rw-r--r--ot/bregman.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/ot/bregman.py b/ot/bregman.py
index c304b5d..2707b7c 100644
--- a/ot/bregman.py
+++ b/ot/bregman.py
@@ -1877,7 +1877,8 @@ def screenkhorn(a, b, M, reg, ns_budget=None, nt_budget=None, uniform=False, res
try:
import bottleneck
except ImportError:
- print("Bottleneck module doesn't exist. Install it from https://pypi.org/project/Bottleneck/")
+ warnings.warn("Bottleneck module is not installed. Install it from https://pypi.org/project/Bottleneck/ for better performance.")
+ bottleneck = np
a = np.asarray(a, dtype=np.float64)
b = np.asarray(b, dtype=np.float64)