26.函數(5)----函數對象

Python中一切皆爲對象,對於函數對象,只需記住:可以當做變量來使用

1.賦值

def func():
	print(1)
a = func
a()							結果是:1

2.做函數參數

def func(a):
	print(a)
def foo():
	print(1)
b = func(foo)
b()							結果是:<function foo at 0x0000020040A1F1E0>   函數對象

3.做函數返回值

def func1():
    return func2
def func2():
    print(1)
func1()()

4.做容器元素

def func1():
    pass
def func2():
    pass
lst = [func1,func2]
for i in lst:
    print(i)

結果爲:<function func1 at 0x000002003FEFC950>
	  <function func2 at 0x0000020040ABCAE8>

def func1():
    pass

def func2():
    pass

dic = {}
dic[func1] = "1"
dic[func2] = "2"
print(dic)

結果爲:{<function func1 at 0x000001D5CE453F28>: '1', <function func2 at 0x000001D5CE453B70>: '2'}