diff --git a/xarray/util/print_versions.py b/xarray/util/print_versions.py
index 0d6d147f0bb..9b304c3c8e6 100755
--- a/xarray/util/print_versions.py
+++ b/xarray/util/print_versions.py
@@ -9,7 +9,7 @@
 
 
 def get_sys_info():
-    "Returns system information as a dict"
+    """Returns system information as a dict"""
 
     blob = []
 
@@ -22,7 +22,7 @@ def get_sys_info():
                 stdout=subprocess.PIPE,
                 stderr=subprocess.PIPE,
             )
-            so, serr = pipe.communicate()
+            so, _ = pipe.communicate()
         except Exception:
             pass
         else:
@@ -37,7 +37,7 @@ def get_sys_info():
     blob.append(("commit", commit))
 
     try:
-        (sysname, nodename, release, version, machine, processor) = platform.uname()
+        (sysname, _nodename, release, _version, machine, processor) = platform.uname()
         blob.extend(
             [
                 ("python", sys.version),