Use f-string

tomc271 · ZedThree · web-flow · commit 8dc88088c48a · 2026-03-04T11:55:07.000Z
Co-authored-by: Peter Hill &lt;zed.three@gmail.com&gt;
diff --git a/src/boututils/run_wrapper.py b/src/boututils/run_wrapper.py
@@ -53,7 +53,7 @@ def shell(command, pipe=False, env=None):
     )
     output = result.stdout if pipe else ""
     if result.stderr:
-        output += "\nSTDERR:\n" + result.stderr
+        output = f"{output}\nSTDERR:\n{result.stderr}"
     return result.returncode, output
 
 

Original file line number	Diff line number	Diff line change
`@@ -53,7 +53,7 @@ def shell(command, pipe=False, env=None):`
`53`	`53`	`)`
`54`	`54`	`output = result.stdout if pipe else ""`
`55`	`55`	`if result.stderr:`
`56`		`- output += "\nSTDERR:\n" + result.stderr`
	`56`	`+ output = f"{output}\nSTDERR:\n{result.stderr}"`
`57`	`57`	`return result.returncode, output`
`58`	`58`
`59`	`59`