def _check_prompt_blank(self, lines, indent, name, lineno):
n = len("<STR_LIT>")<EOL>for i, line in enumerate(lines):<EOL><INDENT>if len(line) >= indent+n+<NUM_LIT:1> and line[indent+n] != '<STR_LIT:U+0020>':<EOL><INDENT>raise ValueError('<STR_LIT>'<EOL>'<STR_LIT>' %<EOL>(lineno+i+<NUM_LIT:1>, name,<EOL>line[indent:indent+n], line))<EOL><DEDENT><DEDENT>
Given the lines of a source string (including prompts and
leading indentation), check to make sure that every prompt is
followed by a space character.  If any line is not followed by
a space character, then raise ValueError.