# 将以数制定年、月、日的日期打印出来
month=[
'january'
'february'
'march'
'april'
'may'
'june'
'july'
'august'
'september'
'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)