[Python] Check Null or N/A or empty String

Sample function to check if string is None or empty "" or “N/A” or “-“

return true if str is not contains conditions.

def is_not_blank_or_na(str):
	return bool(str and str.strip()) and not bool(str == 'N/A' or str == '-' or str.startswith(' ') or str == 'None' or str is None)