Python_ How to define adorners in a class

Case:

Implements an adorner that logs function call information to a log

Requirements:

1. Writes the call time of each function, execution time, and number of calls to the log
2. Can be grouped by decorated functions, call information logging to different logs
3. Dynamic modification of parameters, such as log format
4. Dynamic Turn off log output feature

How to solve this problem?

For the flexibility of the adorner, define a decoration class, the instance method of this class as the adorner, in the class adorner method holds the instance object, facilitates the modification property and the extension function

#!/usr/bin/python3import loggingfrom Time Import time, strftime, localtime, Sleepfrom random import choicefrom functools i Mport Wrapsclass Tolog (): Def __init__ (self, name): Log = Logging.getlogger (name) log.setlevel (logging. INFO) # Log Save file name file_name = logging. Filehandler (name + '. Log ') # Add log file Log.addhandler (file_name) # Log Format log.info (' Start '. Center (5 0, '-')) Self.log = log self.temp = '% (func) s-and [% (start_time) s-% (used_time) s-% (naclls) s] ' De F Go_log (Self, func): @wraps (func) def wrapper (*args, **kwargs): # function per call plus 1 WRAPPER.N  Aclls + = 1 start_time = time () res = func (*args, **kwargs) Used_time = time () -Start_time info = {} info[' func '] = func.__name__ info[' start_time '] = STA      Rt_time info[' used_time '] = used_time info[' naclls '] = Wrapper.naclls                  msg = self.temp% Info # writes the log in format to file Self.log.info (msg) Retu RN Res # Initialize number of calls parameter Wrapper.naclls = 0 Return wrapper # Redefine the logging template def set_l Og_temp (Self, temp): self.temp = temp # shutdown log function def log_off (self): Self.log.setLevel (logging. WARN) # Open log function Def log_on (self): Self.log.setLevel (logging.info) # Instantiate two adorner object log_one = Tolog (' one ') log_tw o = Tolog (' double ') # modifies the log template for instance 2, removing the execution time log_two.set_log_temp ('% (func) s-and [% (start_time) s-% (naclls) s] ') # Close Log_ The logging function in both Log_two.log_off () @log_one. Go_logdef func_one (): Print (' one ') @log_one. Go_logdef func_two (): Print (' Both ') @log_two. Go_logdef func_three (): Print (' three ') if __name__ = = ' __main__ ': for _ in Range: Choice ([func_ One, Func_two, Func_three]) () Sleep (choice ([0.5, 1, 1.5]))

　　

Python_ How to define adorners in a class