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diff --git a/src/sage/misc/package.py b/src/sage/misc/package.py
index 689e5a23b9..4e16fe3a8d 100644
--- a/src/sage/misc/package.py
+++ b/src/sage/misc/package.py
@@ -142,9 +142,14 @@ def pip_installed_packages():
sage: d['beautifulsoup'] # optional - beautifulsoup
u'...'
"""
- proc = subprocess.Popen(["pip", "list", "--no-index", "--format", "json"], stdout=subprocess.PIPE)
- stdout = proc.communicate()[0].decode()
- return {package['name'].lower():package['version'] for package in json.loads(stdout)}
+ with open(os.devnull, 'w') as devnull:
+ proc = subprocess.Popen(
+ ["pip", "list", "--no-index", "--format", "json"],
+ stdout=subprocess.PIPE,
+ stderr=devnull,
+ )
+ stdout = proc.communicate()[0].decode()
+ return {package['name'].lower():package['version'] for package in json.loads(stdout)}
def list_packages(*pkg_types, **opts):
r"""
|