import re
ss = ['count_EVENT_GENRE in [1,2,3,4,5]','coint_EVENT_GENRE = "ROMANCE"']
for s in ss:
fieldObj = re.match(r'[a-z]+(?:_[A-Z]+)*', s)
if fieldObj:
print(fieldObj.group())
aW1wb3J0IHJlCnNzID0gWydjb3VudF9FVkVOVF9HRU5SRSBpbiBbMSwyLDMsNCw1XScsJ2NvaW50X0VWRU5UX0dFTlJFID0gIlJPTUFOQ0UiJ10KZm9yIHMgaW4gc3M6CglmaWVsZE9iaiA9IHJlLm1hdGNoKHInW2Etel0rKD86X1tBLVpdKykqJywgcykKCWlmIGZpZWxkT2JqOgoJCXByaW50KGZpZWxkT2JqLmdyb3VwKCkp