I was missing the quotes in the if statement. Changing if preNumber[0] == 0: to if preNumber[0] == "0": fixed the problem. Why did I need those quotes? The 0 is numerical, so it should not need the quotes, no? -- Dotan Cohen http://what-is-what.com http://gibberish.co.il א-ב-ג-ד-ה-ו-ז-ח-ט-י-ך-כ-ל-ם-מ-ן-נ-ס-ע-ף-פ-ץ-צ-ק-ר-ש-ת ä-ö-ü-ß-Ä-Ö-Ü