python手册学习笔记3

笔记3

http://www.pythondoc.com/pythontutorial3/datastructures.html

装饰器

def log(text):

    def decorator(func):

        def wrapper(*args, **kw):

            print('%s %s():' % (text, func.__name__))

            print('1',func)

            return func(*args, **kw)

        print('2',wrapper)

        return wrapper

    print('3',decorator)

    return decorator

@log('execute')

def now():

    print('2015-3-25')

now()

print('4',now)

>>>

3 <function log.<locals>.decorator at 0x00A3D588>

2 <function log.<locals>.decorator.<locals>.wrapper at 0x00A3D4F8>

execute now():

1 <function now at 0x00A3D540>

2015-3-25

4 <function log.<locals>.decorator.<locals>.wrapper at 0x00A3D4F8>

def log(text):

    def decorator(func):

        def wrapper(*args, **kw):

            print('%s %s():' % (text, func.__name__))

            print('1',func,locals())

            return func(*args, **kw)

        print('2',wrapper,locals())

        return wrapper

    print('3',decorator,locals())

    return decorator

@log('execute')

def now(a,b):

    print('2015-3-25')

now(1,2)

print('4',now,locals())

巴特西

python手册学习笔记3

笔记3

装饰器

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