def cut(self, by, from_start=True):
s, e = copy(self.start), copy(self.end)<EOL>if from_start:<EOL><INDENT>e = s + by<EOL><DEDENT>else:<EOL><INDENT>s = e - by<EOL><DEDENT>return Range(s, e)<EOL>
Cuts this object from_start to the number requestd
        returns new instance