Python的装饰器怎么将两个功能相同的函数,一个带参数一个不带参数的合并成一个函数?
获取本地时间方法
def get_now_local_time():
return time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))装饰器1
def log1(func):
@functools.wraps(func) # 保持传入的函数名称不被返回函数改变
def wrapper(*args, **kwargs):
print('%s %s():' % ("begin call", func.__name__))
call_func_ref = func(*args, **kwargs)
print('%s %s():' % ("end call", func.__name__))
return call_func_ref
return wrapper@log1 # 为函数添加无参数装饰器
def now():
print('Current local time:' + get_now_local_time())
now()无参装饰器函数调用输出
begin call now(): Current local time:2016-10-12 23:51:11 end call now():
装饰器2
def log2(text=None):
def decorator(func):
@functools.wraps(func) # 保持传入的函数名称不被返回函数改变
def wrapper(*args, **kwargs):
print('%s %s():' % (("begin " + text), func.__name__))
call_func_ref = func(*args, **kwargs)
print('%s %s():' % (("end " + text), func.__name__))
return call_func_ref
return wrapper
return decorator@log2('execute current the function') # 为函数添加带参数装饰器
def now():
print('Current local time:' + get_now_local_time())
now()带有参装饰器函数调用输出
begin execute current the function now(): Current local time:2016-10-12 23:49:25 end execute current the function now():
想做完成这两个函数的合并编码,该怎么写?请大牛前辈给指点一下呗,谢谢~~~
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# -*- coding: utf-8 -*-import functoolsimport timedef get_now_local_time(): return time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))def log(text): def decorator(func): @functools.wraps(func) def wrapper(*arg, **kwarg): print('%s, %s()' % ('begin call',func.__name__) if callable(text) else \ '%s %s():' % (("begin " + text), func.__name__)) func(*arg, **kwarg) print('%s, %s()' % ('end call', func.__name__) if callable(text) else \ '%s %s():' % (("end " + text), func.__name__)) return wrapper return decorator(text) if callable(text) else decorator@logdef now(): print('Current local time:' + get_now_local_time()) now() print('==' * 50)@log('execute current the function') # 为函数添加带参数装饰器def now(): print('Current local time:' + get_now_local_time()) now()需求是不是这样子的
callable(object)的文档解释