设计一个python程序，计算人民币与其它货币之间汇率的兑换关系

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设计一个python程序，计算人民币与其它货币之间汇率的兑换关系,第1张

两者为同向关系。人民币币值高则汇率也高。汇率是指本币与外币之间的比值。当人民币币值升高时，势必在同等汇率下，一定本币可以兑换外币，这就是人民币汇率高的表现。也就是说人民币币值高是汇率高的前提，汇率是币值的表现。

拓展资料

汇率是指一国货币与另一国货币的比率或比价，或者说是用一国货币表示的另一国货币的价格。汇率变动对一国进出口贸易有着直接的调节作用。在一定条件下，通过使本国货币对外贬值，即让汇率下降，会起到促进出口、限制进口的作用反之,本国货币对外升值，即汇率上升,则起到限制出口、增加进口的作用。

资料来源：百度百科

cnt = 0

for i in xrange(100 / 1 + 1):

for j in xrange((100 - i * 1) / 5 + 1):

for k in xrange ((100 - i * 1 + j * 5) / 10 + 1):

if i * 1 + j * 5 + k * 10 == 100:

print "1:", i, "5:", j, "10:", k

cnt += 1

print cnt

结果如下，总共121种

1: 0 5: 0 10: 10

1: 0 5: 2 10: 9

1: 0 5: 4 10: 8

1: 0 5: 6 10: 7

1: 0 5: 8 10: 6

1: 0 5: 10 10: 5

1: 0 5: 12 10: 4

1: 0 5: 14 10: 3

1: 0 5: 16 10: 2

1: 0 5: 18 10: 1

1: 0 5: 20 10: 0

1: 5 5: 1 10: 9

1: 5 5: 3 10: 8

1: 5 5: 5 10: 7

1: 5 5: 7 10: 6

1: 5 5: 9 10: 5

1: 5 5: 11 10: 4

1: 5 5: 13 10: 3

1: 5 5: 15 10: 2

1: 5 5: 17 10: 1

1: 5 5: 19 10: 0

1: 10 5: 0 10: 9

1: 10 5: 2 10: 8

1: 10 5: 4 10: 7

1: 10 5: 6 10: 6

1: 10 5: 8 10: 5

1: 10 5: 10 10: 4

1: 10 5: 12 10: 3

1: 10 5: 14 10: 2

1: 10 5: 16 10: 1

1: 10 5: 18 10: 0

1: 15 5: 1 10: 8

1: 15 5: 3 10: 7

1: 15 5: 5 10: 6

1: 15 5: 7 10: 5

1: 15 5: 9 10: 4

1: 15 5: 11 10: 3

1: 15 5: 13 10: 2

1: 15 5: 15 10: 1

1: 15 5: 17 10: 0

1: 20 5: 0 10: 8

1: 20 5: 2 10: 7

1: 20 5: 4 10: 6

1: 20 5: 6 10: 5

1: 20 5: 8 10: 4

1: 20 5: 10 10: 3

1: 20 5: 12 10: 2

1: 20 5: 14 10: 1

1: 20 5: 16 10: 0

1: 25 5: 1 10: 7

1: 25 5: 3 10: 6

1: 25 5: 5 10: 5

1: 25 5: 7 10: 4

1: 25 5: 9 10: 3

1: 25 5: 11 10: 2

1: 25 5: 13 10: 1

1: 25 5: 15 10: 0

1: 30 5: 0 10: 7

1: 30 5: 2 10: 6

1: 30 5: 4 10: 5

1: 30 5: 6 10: 4

1: 30 5: 8 10: 3

1: 30 5: 10 10: 2

1: 30 5: 12 10: 1

1: 30 5: 14 10: 0

1: 35 5: 1 10: 6

1: 35 5: 3 10: 5

1: 35 5: 5 10: 4

1: 35 5: 7 10: 3

1: 35 5: 9 10: 2

1: 35 5: 11 10: 1

1: 35 5: 13 10: 0

1: 40 5: 0 10: 6

1: 40 5: 2 10: 5

1: 40 5: 4 10: 4

1: 40 5: 6 10: 3

1: 40 5: 8 10: 2

1: 40 5: 10 10: 1

1: 40 5: 12 10: 0

1: 45 5: 1 10: 5

1: 45 5: 3 10: 4

1: 45 5: 5 10: 3

1: 45 5: 7 10: 2

1: 45 5: 9 10: 1

1: 45 5: 11 10: 0

1: 50 5: 0 10: 5

1: 50 5: 2 10: 4

1: 50 5: 4 10: 3

1: 50 5: 6 10: 2

1: 50 5: 8 10: 1

1: 50 5: 10 10: 0

1: 55 5: 1 10: 4

1: 55 5: 3 10: 3

1: 55 5: 5 10: 2

1: 55 5: 7 10: 1

1: 55 5: 9 10: 0

1: 60 5: 0 10: 4

1: 60 5: 2 10: 3

1: 60 5: 4 10: 2

1: 60 5: 6 10: 1

1: 60 5: 8 10: 0

1: 65 5: 1 10: 3

1: 65 5: 3 10: 2

1: 65 5: 5 10: 1

1: 65 5: 7 10: 0

1: 70 5: 0 10: 3

1: 70 5: 2 10: 2

1: 70 5: 4 10: 1

1: 70 5: 6 10: 0

1: 75 5: 1 10: 2

1: 75 5: 3 10: 1

1: 75 5: 5 10: 0

1: 80 5: 0 10: 2

1: 80 5: 2 10: 1

1: 80 5: 4 10: 0

1: 85 5: 1 10: 1

1: 85 5: 3 10: 0

1: 90 5: 0 10: 1

1: 90 5: 2 10: 0

1: 95 5: 1 10: 0

1: 100 5: 0 10: 0

121

可以参考代码：

def test(n):

    if n[-1]=="R":

        return str(int(n[0:-1])/6.5)+"D"

    elif n[-1]=="D":

        return str(int(n[0:-1])*6.5)+"R"

或是可以使用input获取键盘输入的字符，而不是作为方法的传入参数n