用Python编写一个能输入月份数字

的程序，输出对应的月份英文单词。

答：可以使用以下代码实现：

month_num = int(input("请输入月份数字："))
if month_num == 1:
    print("January")
elif month_num == 2:
    print("February")
elif month_num == 3:
    print("March")
elif month_num == 4:
    print("April")
elif month_num == 5:
    print("May")
elif month_num == 6:
    print("June")
elif month_num == 7:
    print("July")
elif month_num == 8:
    print("August")
elif month_num == 9:
    print("September")
elif month_num == 10:
    print("October")
elif month_num == 11:
    print("November")
elif month_num == 12:
    print("December")
else:
    print("输入无效数字")

这个程序可以根据用户输入的月份数字输出对应的英文单词。如果输入的数字不是1至12中的某一个，则会输出"输入无效数字"。