python核心程式設計第六章練習6 8

6-8.

列表。給出乙個整型值，返回代表該值得英文，比如輸入89會返回「eight-nine」。附加題：能夠返回符合英文語法規律的新式，比如輸入89會返回「eighty-nine」。本練習中的值假定在0~1000。

【答案】

**如下：

number = int(raw_input('please input a number between 1 to 1000: ... '))

units = ['zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine']
tens_units = ['ten', 'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen']
tens = ['twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety']
print 'the number you input is: '
if 0 <= number <= 9: print units[number]
elif 10 <= number <= 19: print tens_units[number - 10]
elif 20 <= number <= 99: 
if number % 10 == 0: print tens[number / 10 - 2]
else: print '%s-%s' % (tens[number / 10 - 2], units[number % 10])
elif 100 <= number <= 999:
if number % 100 == 0: print '%s hundred' % (units[number / 100])
elif number % 10 == 0 and (number - 100 * (number / 100)) != 10: print '%s hundred and %s' % (units[number / 100], tens[(number - 100 * (number / 100))/10 - 2])
elif number % 10 == 0 and (number - 100 * (number / 100)) == 10: print '%s hundred and ten' % (units[number / 100])
elif number % 10 != 0 and 20 < (number - 100 * (number / 100))<= 99: print '%s hundred and %s-%s' % (units[number / 100], tens[(number - 100 * (number / 100)) / 10 - 2], units[number - 10 * (number / 10)])
elif number % 10 != 0 and 10 < (number - 100 * (number / 100))< 20: print '%s hundred and %s' % (units[number / 100], tens_units[number - 100 * (number / 100) - 10])
elif number % 10 != 0 and 0 < (number - 10 * (number / 10)) < 10: print '%s hundred and %s' % (units[number / 100], units[number - 10 * (number / 10)])
else: print 'ten hundred'

【執行結果】

please input a number between 1 to 1000: ... 309

the number you input is: 
three hundred and nine
please input a number between 1 to 1000: ... 721
the number you input is: 
seven hundred and twenty-one

看了一些網上的答案 發現沒有自己做的那麼簡單易懂，算了自己做吧。下面是自己做的：

#!/usr/bin/env python

number = int(raw_input('please input a number between 0 to 1000:'))
digit = ['zero','one','two','three','four','five','six','seven','eight','nine']
tendigit = ['ten','eleven','twelve','thirteen','fourteen','fifteen','sixteen','seventeen','eighteen','nineteen']
units = ['twenty','thirty','fourty','fifty','sixty','seventy','eighty','ninety']
if 0 <= number <= 9:
print 'translate into english is:',digit[number]
if 10 <= number <= 19:
print 'translate into english is:',tendigit[number-10]
if 20 <= number <= 99:
print 'translate into english is:',units[int(number/10)-2],'-',digit[number%10]
if 100 <= number <= 999:
ten = number%100
if 0 <= ten <= 9:
print 'translate into english is:',digit[int(number/100)],'hundred and',digit[ten]
elif 10 <= ten <= 19:
print 'translate into english is:',digit[int(number/100)],'hundred and',tendigit[ten-10]
else:
print 'translate into english is:',digit[int(number/100)],'hundred and',units[int(ten/10)-2],'-',digit[ten%10]

測試：

please input a number between 0 to 1000:907

translate into english is: nine hundred and seven

please input a number between 0 to 1000:917

translate into english is: nine hundred and seventeen

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