for line in lines[1:]:
    stripped = line.lstrip()
if stripped:
    indent = min(indent, len(line) - len(stripped))
trimmed = [lines[0].strip()]
if indent < sys.maxsize:
    for line in lines[1:]:
        trimmed.append(line[indent:].rstrip())
while trimmed and not trimmed[-1]:
    trimmed.pop()
while trimmed and not trimmed[0]:
    trimmed.pop(0)
return '\n'.join(trimmed)
Proper indentation for Python multiline strings