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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def opers(self):
 """ Returns a list of operators this mnemonic uses """

        i = [x for x in self.asm.strip(' \t\n').split(' ') if x != '']

        if len(i) == 1:
            return []

        i = ''.join(i[1:]).split(',')
        if self.condition_flag is not None:
            i = i[1:]
        else:
            i = i[0:]

        op = [x.lower() if is_register(x) else x for x in i]
        return op