python ：函数作业

1. list_data = [“apple”, “watermelon”, “orange”, “banana”, “peach”, “blueberry”, ]
   list_data.sort(key=lambda x: x[1])
   #按第二个字符去排序，如果第二个字符相同，按照最后一个字符

list_data = ["apple", "watermelon", "orange", "banana", "peach", "blueberry"]
list_data.sort(key=lambda x: x[-1])
list_data.sort(key=lambda x: x[1])
print(list_data)

2. 定义一个函数，参数列表为：arg1, arg2=None, *args, /, * arg3=4, arg4=5
   请调用的时候传参

def fun_a (arg1, arg2=None, /, *, arg3=4, arg4=5):
    print(arg1, arg2, arg3, arg4)
fun_a(1,2,arg3=3,arg4=4)