丑陋的代码

#!/usr/bin/env python3
from sys import argv

script, salary = argv
try:
    salary = float(salary)

    if salary <= 3500:
        tax = 0.0
    else:
        should = salary - 3500
        if should <= 1500:
            tax1 = 0.03
            suan = 0
        if should <= 4500:
            tax1 = 0.10
            suan = 105
        elif should <= 9000:
            tax1 = 0.2
            suan = 555
        elif should <= 35000:
            tax1 = 0.25
            suan = 1005
        elif should <= 55000:
            tax1 = 0.3
            suan = 2755
        elif should <= 80000:
            tax1 = 0.35
            suan = 5505
        else:
            tax1 = 0.45
            suan = 13505
        tax = should * tax1 - suan

    print("%.2f" % tax)
except ValueError:
    print("Parameter Error")
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