Update Lib/test/test_os.py

Author: picnixz

Lib/test/test_os.py

@@ -2263,7 +2263,8 @@ def test_execve_env_concurrent_mutation_with_fspath_posix(self):
         # Regression test for https://github.com/python/cpython/issues/143309.
 
         message = "hello from execve"
-        code = """import os, sys
+        code = """\
+        import os, sys
 
         class MyPath:
             def __fspath__(self):