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-rwxr-xr-xscripts/pstree.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/pstree.py b/scripts/pstree.py
index dba9f1bd..18732b8c 100755
--- a/scripts/pstree.py
+++ b/scripts/pstree.py
@@ -29,6 +29,7 @@ $ python3 scripts/pstree.py
"""
from __future__ import print_function
+
import collections
import sys