/usr/lib/python3/dist-packages/stringtemplate3/language/ is in python3-stringtemplate3 3.1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/stringtemplate3/language/ASTExpr.py
/usr/lib/python3/dist-packages/stringtemplate3/language/ActionEvaluator.py
/usr/lib/python3/dist-packages/stringtemplate3/language/ActionLexer.py
/usr/lib/python3/dist-packages/stringtemplate3/language/ActionParser.py
/usr/lib/python3/dist-packages/stringtemplate3/language/AngleBracketTemplateLexer.py
/usr/lib/python3/dist-packages/stringtemplate3/language/CatIterator.py
/usr/lib/python3/dist-packages/stringtemplate3/language/ChunkToken.py
/usr/lib/python3/dist-packages/stringtemplate3/language/ConditionalExpr.py
/usr/lib/python3/dist-packages/stringtemplate3/language/DefaultTemplateLexer.py
/usr/lib/python3/dist-packages/stringtemplate3/language/Expr.py
/usr/lib/python3/dist-packages/stringtemplate3/language/FormalArgument.py
/usr/lib/python3/dist-packages/stringtemplate3/language/GroupLexer.py
/usr/lib/python3/dist-packages/stringtemplate3/language/GroupParser.py
/usr/lib/python3/dist-packages/stringtemplate3/language/InterfaceLexer.py
/usr/lib/python3/dist-packages/stringtemplate3/language/InterfaceParser.py
/usr/lib/python3/dist-packages/stringtemplate3/language/NewlineRef.py
/usr/lib/python3/dist-packages/stringtemplate3/language/StringRef.py
/usr/lib/python3/dist-packages/stringtemplate3/language/StringTemplateAST.py
/usr/lib/python3/dist-packages/stringtemplate3/language/StringTemplateToken.py
/usr/lib/python3/dist-packages/stringtemplate3/language/TemplateParser.py
/usr/lib/python3/dist-packages/stringtemplate3/language/__init__.py