1-1
def test4(name,age=9999,*args,**kwargs):
    print(name)
    print(age)
    print(args)
    print(kwargs)
    logger("TEST4")

def logger(source):
    print("from %s" % source)

test4('itachi',age=21,sex='m',hobby='sweet_rice_ball')
--->
itachi
21
()
{'sex': 'm', 'hobby': 'sweet_rice_ball'}
from
 
 TEST4
執行結果沒有問題

1-2 區域性變數
def change_name(name):
    print("before change",name)
    name = "Uchiha Itachi"
    print("after change",name)

name = 'itachi'
change_name(name)
--->
before change itachi
after change Uchiha Itachi

# 區域性變數，只在函式裡生效；這個函式就是這個變數的作用域

1-3
school = '
 
zxcv edu'

def change_name(name):
    school = 'Mage Linux'
    print('before change',name,school)
    name = 'Uchiha Itachi'
    age = 23
    print('after change',name)

print(school)
name ='itachi'
change_name(name)
print(name)
--->
zxcv edu
before change itachi Mage Linux
after change Uchiha Itachi
itachi

 
# 全域性變數，在函式中是改不了的，函式作用域只在小函式中生效
# 雖然叫同樣的名字，但是沒關係
# 函式中預設，區域性變數無法修改全域性變數

1-4 如果想在區域性變數中修改全域性變數，應該怎麼辦？ 宣告 global
school = 'zxcv edu'

def change_name(name):
    global school     # 在函式中修改全域性變數
    school = 'Mage Linux'
    print('before change',name,school)
    name = 'Uchiha Itachi'
    age = 23
    print('after change',name)

name ='itachi'
change_name(name)
print(name)
print('school:',school)
--->
before change itachi Mage Linux
after change Uchiha Itachi
itachi
school: Mage Linux

# 這種情況是可以修改的