date

# import sys
# print (sys.argv)
# name="alex"
# print ("i am %s" %(name))
# names = ['Alex', 'chris', 'neil', 'Charles']
# import time,calendar  #引入时间模块
# print (time.strftime("%Y-%m-%d %H:%M:%S",time.localtime()))
# cal=calendar.month(2017,6)
# print ("以下是2017年6月的日历")
# print (cal)
# import calendar
# i=1
# write=int(input("Please enter the year:"))
# read=int(input("Please enter the month:"))
# cal = calendar.month(write,read)
# print (cal)
def changeme(mylist):
    "修改传入的列表"
    mylist.append([1,2,3,4])
    print ("函数内取值:",mylist)
    return

#调用changeme函数
mylist = [10,20,30]
changeme(mylist)
print ("函数外取值:",mylist)