def __init__(self, master):

self.l1 = Label(master, text="一个优雅的罗马数字转换器<(0^◇^0)>")

self.l1.grid(row=0,columnspan=3, sticky=W)

self.l1 = Label(master, text="输入")

self.l1.grid(row=1)

self.v = IntVar()

self.e1 = Entry(master, textvariable=self.v)

self.e1.grid(row=1, column=1)

self.b1 = Button(master, text="转换", command=self.convert)

self.b1.grid(row=1, column=2)

self.m = StringVar()

self.m1 = Message(master, textvariable=self.m, aspect=5000)

self.m1.grid(row=2, columnspan=3, sticky=W)

def convert(self):

bd = {1: "I", 2: "II", 3: "III", 4: "IV", 5: "V", 6: "VI", 7: "VII", 8: "VIII", 9: "IX"}

td = {1: "X", 2: "XX", 3: "XXX", 4: "XL", 5: "L", 6: "LX", 7: "LXX", 8: "LXXX", 9: "XC"}

hd = {1: "C", 2: "CC", 3: "CCC", 4: "CD", 5: "C", 6: "DC", 7: "DCC", 8: "DCCC", 9: "CM"}

md = {1: "M", 2: "MM", 3: "MMM"}

m = ""

x = self.v.get()

if x < 0 or x > 3999:

m = "数字超过范围"

else:

if x > 1000:

m = x / 1000

m = md.get(m)

x = x % 1000

if x > 100:

h = x / 100

m = m + hd.get(h)

x = x % 100

if x > 10:

t = x / 10

m = m + td.get(t)

x = x % 10

if x > 0:

m = m + bd.get(x)