#!/usr/bin/env python3
# 将以数指定年、月、日的日期打印出来
months = ['January', 'February', 'March', 'April', 'May', 'June',
          'July', 'August', 'Septmber', 'October', 'November', 'December']

# 一个列表，其中包含数1～31对应的结尾
endings = ['st', 'nd', 'rd'] + 17 * ['th'] \
    + ['st', 'nd', 'rd'] + 7 * ['th'] \
    + ['st']

year = input('Year: ')
month = input('Month (1-12): ')
day = input('Day (1-31): ')

month_number = int(month)
day_number = int(day)

# 别忘了将表示月和日的数减1，这样才能得到正确的索引
month_name = months[month_number-1]
ordinal = day + endings[day_number-1]

print(month_name + ' ' + ordinal + ', ' + year)

# Year: 1974
# Month (1-12): 8
# Day (1-31): 16
# August 16th, 1974