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                # 在函數中嵌入裝飾器 # 在函數中嵌入裝飾器 我們回到日志的例子,并創建一個包裹函數,能讓我們指定一個用于輸出的日志文件。 ~~~ from functools import wraps def logit(logfile='out.log'): def logging_decorator(func): @wraps(func) def wrapped_function(*args, **kwargs): log_string = func.__name__ + " was called" print(log_string) # 打開logfile,并寫入內容 with open(logfile, 'a') as opened_file: # 現在將日志打到指定的logfile opened_file.write(log_string + '\n') return wrapped_function return logging_decorator @logit() def myfunc1(): pass myfunc1() # Output: myfunc1 was called # 現在一個叫做 out.log 的文件出現了,里面的內容就是上面的字符串 @logit(logfile='func2.log') def myfunc2(): pass myfunc2(): pass myfunc2() # Output: myfunc2 was called # 現在一個叫做 func2.log 的文件出現了,里面的內容就是上面的字符串 ~~~
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