突然の死的なやつ(Python)

totsuzen_no_shi.py

def totsuzenno(string,returnstr):
        strbytes = len(string)
        if strbytes % 2:
                count = strbytes - 2
        else:
                count = strbytes - 1
        line1 = '＿人'
        line2 = '＞　' + string + '　＜' + returnstr
        line3 = '￣^'
        for i in range(count):
                line1 += '人'
                line3 += 'Y^'
        line1 += '＿' + returnstr
        line3 += '￣' + returnstr
        return line1 + line2 + line3 + returnstr