python 解包、递归

解包：

d = {"username":"admin","password":"123456"}
print(d.items())
# [(‘username‘, ‘admin‘), (‘password‘, ‘123456‘)]
for k,v in d.items():
    print(k,v）

递归

#函数自己调用自己，就是递归

count = 0
def test():
    global count
    count+=1
    print("5.1快乐",count)
    test()

test()