if nmonth == '1' or nmonth == 'да' or nmonth == 'Да' or nmonth == 'ДА' or nmonth == 'lf' or nmonth == 'Lf' or nmonth == 'LF' or nmonth == 'yes' or nmonth == 'Yes' or nmonth == 'YES' or nmonth == 'нуы' or nmonth == 'Нуы' or nmonth == 'НУЫ' and allmon >= 0:
if nmonth.lower() in ['1', 'да', 'lf', 'yes', 'нуы'] and allmon >= 0: