How to use say_hello method in ATX

Best Python code snippet using ATX

demo01.py

Source:demo01.py Github

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2 装饰器3"""4# 需求变化:在以下两个函数中,增加新功能(在控制台中打印函数名称).5"""6def say_hello(): 7 print("hello")8def say_goodbye(): 9 print("goodbye")10say_hello()11say_goodbye()12"""13# 缺点:新增加的功能,定义了多次.14"""15def say_hello():16 print("say_hello")17 print("hello")18def say_goodbye():19 print("say_goodbye")20 print("goodbye")21say_hello()22say_goodbye()23"""24# 行为相同,数据不同.25# 提取相同的行为26# 缺点: 增加新功能,修改原有函数内部(代码可读性不高).27"""28def print_func_name(func):29 print(func.__name__)# 函数 --> 名称30def say_hello():31 print_func_name(say_hello)32 print("hello")33def say_goodbye():34 print_func_name(say_goodbye)35 print("goodbye")36"""37"""38# 新功能39def print_func_name(func):40 print(func.__name__)41# 旧功能42def say_hello(): 43 print("hello")44def say_goodbye(): 45 print("goodbye")46# 旧功能 = 新功能 + 旧功能47say_hello = print_func_name + say_hello48 49say_hello()50say_goodbye()51"""52# 缺点:定义完旧功能,需要在旧功能下面用内部函数覆盖.53"""54def print_func_name(func): # func --> say_hello55 def wrapper():56 # 定义新功能57 print(func.__name__)58 # 调用旧功能59 func()60 return wrapper61# 旧功能62def say_hello():63 print("hello")64def say_goodbye():65 print("goodbye")66# 旧功能 = 新功能 + 旧功能67# 旧功能 = 新功能 ( 旧功能 ) # 返回值是内部函数(新功能 + 旧功能)68say_hello = print_func_name(say_hello)69say_goodbye = print_func_name(say_goodbye)70say_hello()# 调用内部函数71say_goodbye()72"""73# 缺点:如果参数不同，会异常．74"""75def print_func_name(func): # func --> say_hello76 def wrapper():77 # 定义新功能78 print(func.__name__)79 # 调用旧功能80 func()81 return wrapper82# 旧功能83@print_func_name # say_hello = print_func_name(say_hello)84def say_hello():85 print("hello")86@print_func_name # say_goodbye = print_func_name(say_goodbye)87def say_goodbye():88 print("goodbye")89say_hello()# 调用内部函数90say_goodbye()91"""92# 缺点：旧功能的返回值丢失了93"""94def print_func_name(func): # func --> say_hello95 def wrapper(*args):# 星号元组形参96 # 定义新功能97 print(func.__name__)98 # 调用旧功能99 func(*args)# 序列实参100 return wrapper101# 旧功能102@print_func_name# say_hello = print_func_name(say_hello)103def say_hello():104 print("hello")105 return 1106@print_func_name# say_goodbye = print_func_name(say_goodbye)107def say_goodbye(name):108 print(name,"goodbye")109 return 2110print(say_hello())# 调用内部函数111print(say_goodbye("qtx"))112"""113def print_func_name(func): # func --> say_hello114 def wrapper(*args,**kwargs):115 # 定义新功能116 print(func.__name__)117 # 调用旧功能118 return func(*args,**kwargs)119 return wrapper120# 旧功能121@print_func_name# say_hello = print_func_name(say_hello)122def say_hello():123 print("hello")124 return 1125@print_func_name# say_goodbye = print_func_name(say_goodbye)126def say_goodbye(name):127 print(name,"goodbye")128 return 2129print(say_hello())# 调用内部函数...

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code01.py

Source:code01.py Github

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1"""2装饰器3"""4"""5def say_hello():6 print("hello")7def say_goodbye():8 print("goodbye")9say_hello()10say_goodbye()11"""12# 需求:在两个方法所实现的功能基础上,增加一种新功能(打印方法名称).13"""14def say_hello():15 print(say_hello.__name__)16 print("hello")17def say_goodbye():18 print(say_goodbye.__name__)19 print("goodbye")20"""21# 在say_hello与say_goodbye内部调用新功能,不容易改变(增加/删除)22"""23def print_func_name(func):24 print(func.__name__)25def say_hello():26 print_func_name(say_hello)27 print("hello")28def say_goodbye():29 print_func_name(say_goodbye)30 print("goodbye")31"""32"""33def print_func_name(func):# 提供旧功能34 def wrapper():# 包装35 print(func.__name__)# 新功能36 func()# 调用旧功能37 return wrapper38def say_hello():39 print("hello")40def say_goodbye():41 print("goodbye")42# 调用外部函数43say_hello = print_func_name(say_hello)44say_goodbye = print_func_name(say_goodbye)45# 调用内部函数(包装新 + 旧功能)46say_hello()47say_goodbye()48"""49"""50def print_func_name(func):# 提供旧功能51 def wrapper():# 包装52 print(func.__name__)# 新功能53 func()# 旧功能54 return wrapper55@print_func_name # say_hello = print_func_name(say_hello)56def say_hello():57 print("hello")58@print_func_name59def say_goodbye():60 print("goodbye")61say_hello()62say_goodbye()63"""64def print_func_name(func): # 提供旧功能65 def wrapper(*args, **kwargs): # 包装66 print(func.__name__) # 新功能67 return func(*args, **kwargs) # 旧功能68 return wrapper69@print_func_name # say_hello = print_func_name(say_hello)70def say_hello():71 print("hello")72 return "ok"73@print_func_name74def say_goodbye(name):75 print(name, "goodbye")76result = say_hello()77print(result)...

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