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Copy pathdecorator.py
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73 lines (46 loc) · 1.48 KB
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#!/bin/env python
# -*- coding:utf-8 -*-
import functools
# 定义decorator
def log(func):
def wrapper(*args, **kw): # 接受任意参数的调用
print('call %s():' % func.__name__)
return func(*args, **kw)
return wrapper # 返回一个函数
@log # now = log(now)，同名的now指向了新的函数
def now():
print('2015-12-19') # 先调用装饰的函数，在调用原始函数
print(now())
print(now.__name__) # 此时now的name已变为返回函数wrapper
# 定义decorator带参数
def log(text):
def decorator(func):
def wrapper(*args, **kw):
print('%s %s():' % (text, func.__name__))
return func(*args, **kw)
return wrapper
return decorator
@log('执行') # now=log('执行')(now)
def now():
print('2017-12-19')
print(now())
print(now.__name__) # 此时now的name已变为返回函数wrapper
def log(func):
@functools.wraps(func) # wrapper.__name__ = func.__name__
def wrapper(*args, **kw):
print('call %s():' % func.__name__)
return func(*args, **kw)
return wrapper
def log3(text):
def decorator(func):
@functools.wraps(func) # wrapper.__name__ = func.__name__
def wrapper(*args, **kw):
print('%s %s():' % (text, func.__name__))
return func(*args, **kw)
return wrapper
return decorator
@log3('执行') # now=log('执行')(now)
def now3():
print('2017-12-19')
print(now3())
print(now3.__name__)